WickedImpulse

My Friend has a pokemon whose original trainer no longer exists. So it must be a banned account

I recently discovered a banned account and some of my real life friends told me that these get banned because they gain experience illegally. I have gained quite a lot of experience in one day by training accounts. Is that illegal

I started to train Pokemon as soon as created my account and when i had level 100 pokemon i started to battle with the the GYM leaders and all and became eligible to find legendaries. But i coud only find one and not any more. Is it because I am quite new( I created account yesterday and spent around 9 hours) or is it because i am not looking properly. Because i have been searching but cant find more.