Questions regarding positioning myself in a print on demand side hustle.

Hello guys and gals, so im basically starting a print on demand shop on etsy and i was really wondering how can i position myself? Problem is that finding a niche is very difficult since there are a lot of competitors.Most likely a good niche that has enough potential buyers is already taken.

Since all good niches are already taken im only left with few niches that dont have enough demand so they are not worth it and the rest is already overflown with competitors.

Im maybe really sounding pessimistic here, but i have no idea how to get into this.

Or should i just screw niches and only focus on low quality " be kind" t shirts and just by lowering the price i could play the game as in higher volume?

Thank you for all replies.