Instagram issue

Hey guys, as the title said i have like from yesterday to this moment 3 account banned i dunno why !! they are fresh and PV also i warmed up them like slowly also i only follow 3 times a day like 20-25 followers, but i don't know why they are banned.. could anyone explain to me why ?

Thanks in advance guys !

What kind of proxy did you use?

mine !! also I'm using the accounts manually !! i didn't get it, everything what i do is kinda clear and safe !! but i still dunno get it

Bad Accounts or bad proxy