how do i finger my bumhole

ive tried a few times, read multiple articles and posts, and watched a few videos but i dont know how to do it.
my main issue is the position.
i've tried using my right hand and going around my right cheek, however that only allows my finger to "come hither" the right side of my ass hole, whereas from what i've heard and seen from little diagrams it should be on the side closest to my cock.
i've tried putting my right hand through my legs but that always feels super weird and uncomfortable.
it feels like i do everything wrong and i just dont know what to do. i really want to experience an anal orgasm as well so im so conflicted. i dont want to give up!
could someone give an ultimate fingering guide? i.e. what position you go in, how you stick your finger in, do you use a glove, how aggressive should you be for it to actually feel good, etc.
any and all help is appreciated <3