Losing Motivation And Hope

I've been on YT now for 2 years in the gaming niche.

I use to have fun and smile and laugh making videos/streams, Fast forward to now and I dread making content, It feels like a chore and I've lost 90% of my viewers.

I see others who have brand new channels or starting live streams just a month ago and doing better then me which hurts.

I enjoy YouTube. Just not what I'm doing currently and people say "find a niche and stick to it" well I don't know my niche and apparently you can't change it.

My channel is monetised but I don't really earn much from it.

Any tips or advice would be great, and quitting isn't advice.