12 frames per second or 18 with double and triple framing. I find it too difficult and time inefficient to animate at high fps And single framing.

I use 30, my animations look to slow if i don't. It's all about preference i know a couple of people even use 48.

there is no definitive 'best' fps. it depends on your animation style. I started out at 15, and then for years I used 18 fps as my main. most of the time I use 20 these days, and rarely, 24. I see no need to ever go up to 30, but that's just me.

30 fps is the best if you mean is quality. . back in march, i uses 14 fps then move to 30 fps because that is obligatory in film tribute. .
but first try what you feel best for you, , then enhance it. . good luck bruh

30 is easier than 24 if you ask me.

you can just double frame all the frames in 30 and much smoother tweening.

24 is good. I recommend you use that