I know you have potential because I had to go search for problems in your channel. Most channels I review I can tell the problem from video 1 that I saw. You definitely came a long way and your channel is definitely improving.
OK so after watching a couple of your videos I can try and point out flaws in my opinion. Please do understand this is constructive criticism and I am only saying what I am saying in hopes of trying to help you.
I realized you took a 5 month break, why ?
Dam, through my whole review off. I deleted my first review because it is not your latest content. OK second attempt lets go.
Thumbnails:
I will start with where the other guy left off. Your thumbnails are awesome I like the combination with orange and white on the text but it is definitely lacking. Now when I scroll through the history of your channel this is definitely the best thumbnails your channel has seen. I think what you can do to improve it is keep the text color combo but change the photo.
Take for example your New Year thumbnail it is perfect. I know it is from you and the picture fits a new year's moto. Then you get bf vs gf. Your hand is in the way of your gf and the text, blocks part of your face lastly you take up most of the thumbnail so it seems like one person. Symmetry is key in a photo.
Top 5 of 2017 has only 4 pictures and I can't even make out what these pictures are. 2018 Goals has a picture of you, again the words are in the way and the picture does not represent goals. Poorly puppy is your 2nd best thumbnail of your latest content. You can see the puppy has a cone so something must be wrong. Maybe if you moved a bit left or the wording was not in your way it would have been much better.
Darkening your photo and adding words on top was a smart move but I think you need to lighten it a tad, some pictures are already dark and that layers makes it to dark.
Problems across all videos:
Now here is the tricky part. Each video has its own mistakes and rarely did I find a mistake that stretches over all videos but there are some.
Stop filming at night if possible it makes the lighting in videos bad. If you simply just can't watch a DIY tutorial on lights and tutorials on how to do proper lighting. Start color grading your videos and also if possible start adding B-Roll to your videos (Peter Mckinnon covers color grading and B-roll fairly well.)
Also you talk extremely soft and keep one tone when vloging in doors maybe gain a bit of energy or when telling a story talk softly to build up tension and then when you reach the climax start talking louder and faster.
Problems per video:
In your 2018 goals video it is just about you vloging. Nothing else. It gets stale rather quickly. Instead of just vloging a video try and represent what you are talking about for instance. When you mentioned going to spain. Film a stop motion scene where a plane leaves from Europe and landing in Spain while your audio is still playing.
Top 5 moments did not work because it had no real meat to the story. A story has three parts.
Setup (Jack and Jill went up the hill), Conflict (Jack fell down), Resolution(Jill came tumbling after). Think about your next video, plan it and then shoot it get those three parts.
Boyfriend vs Girlfriend seemed like a lot of arguing and like you guys fought more then having fun. It made me feel uncomfortable.
New year, well there was no real dialogue. The video made it look like you had tons of fun but I did not feel that fun because of the lack of dialogue. You said you did not shoot an intro or outro and I have a feeling you are in the same situation I am.
Some final notes:
I found little dialogue in the streets, crowded places or even sometimes with friends. Your GF seems cool with it and that is great to have someone that is camera ready like that but if you have the fear to speak in public force yourself. The more you do it, the easier it gets trust me.
Your channel are is better then most that I saw on this site but still needs work. Try the orange and white text instead of just the orange text. It will fit with your thumbnail as well. Also try and get your profile picture to match your channel art.
Then shoot a new channel trailer. Your trailer is not nearly on par to the quality content you bring out today.
Add background music to all your videos not just one video and also where can add sound effects. If you move a cup add a sfx, if you slide the window close add a sfx etc. Go through your video and look with your ears.
Add better transitions from one scene to the other.
Then I have to say I am glad that you returned you have potential and can definitely grow a lot if you touch on these subjects I talked about. I can see you script your stuff and that is great, it will help a lot in the future. Just cut away before glimpsing at your screen.
I did not go through this to check my spelling and grammar, I was procrastinating at work way to much already. Also keep in mind this is just my opinion and I might be wrong on some aspects. Do what you enjoy and not others.
I wish you all the luck and have a great day
the effort definitely paid off. And I know that probably sounds stupid, but I bet you it's true haha! 
