Instagram ?

When someone deactivates or blocks their Instagram does Instagram delete them off of your following list? My “best friend” apparently deleted me off of snap chat but said that her snap glitches & than I asked her if her Instagram glitches too because she also blocked me on their & she said that she deactivated it but I’ve deactivated my Instagram & it doesn’t unfollow people & her account is still there it so I was wondering if she blocked me would Instagram unfollow her ?