That's the way to go. Reddit is awesome.
I don't do it for my channel, but buying upvotes on Reddit is a great way to get views on YouTube. It's against the ToS of Reddit, but YouTube doesn't have any rules regarding Reddit vote manipulation... I've done it for websites of mine to get traffic on them, so they're more desirable when I sell the sites, and I've instructed clients (who were willing to be a little shady) to do it for their YouTube videos and they've gotten anywhere from 10k-30k views per video when they spend $10-15 on Reddit upvotes...
I don't recommend it though, do it the real way - post to Reddit and if your content is good, they'll upvote it. That's what I do. Grats on the gains though. I was looking at your channel again, and I know you like FIFA. You should consider posting some TEAM1 vs TEAM2 FIFA matches when those two teams are playing. So if Chelsea is playing Liverpool in real life, post a Chelsea vs Liverpool FIFA game so you can get some free traffic from people seeing your video in suggested videos when they search for the IRL game highlights. It's a nice trick I like to do for sports games