Stef
STEF SZN
Delivery is EVERYTHING
A lot of great advice in this post, but this stands out as the most important. You can write the best joke, but if it's not delivered correctly (you're hesitant instead of just going for it, etc.) it can all fall apart. I believe comedic timing is natural but some things can be picked up.
I don't consider myself a comedian but I am a bit of a comedy nerd. If you're really serious about being 'funnier' then study it. I love watching stand-up. There's a plethora of great stuff on Netflix and even YouTube. Watch a couple, and pay attention to how they set-up jokes and punchlines. Listen to comedians interviews or them talking about their craft. A lot of comedy comes from life. Don't be afraid to make fun of yourself. There's plenty that you can learn and take away from it. Cheers!