How to not forget an account?

im a forgetful person and i always forget my pass for my account this is the 19th account i made this year because i keep forgetting my mails. My phone doesn't have the "save passwords" feature and i don't wanna write it down on my notes for fear of someone getting inside it. Is it also weird every time i make an acc there's this one person that blocks me? idk who they are but i noticed a pattern when my acc only answers a certain user question i get blocked by them however if it isn't that certain user my account is left alone by them. I tried talking to it to that person but they ignored me thus far.