Tips to solve Shadow banned Issue

I have more than 10 accounts having 50k+ followers all handled by different VA by manually each account has separate devices. Earlier having growth 2k follower a day after shadowbanned now each day have a negative follower.
All post reach only have home impression no hashtag or another impression.
I knew why this happens, I used same hashtag from starting a combination of 25 hashtags. Now my question is how to get rid of the shadow-banned issue fast. What tips you guys share so in future not shadowbanned issued happened.
Thanks

I heard that one should avoid using too many hashtags , and after a while the shadowban disappears