Ghost Followers

Hey guys, what you think if I delete ghost followers ( around 20-30k, now I'm 175k) will that help with engagement?
My last thread is https://www.blackhatworld.com/seo/need-help-with-engagement-rate.1002280/

Since 6-12 December drop from around 12-14k per shot ( if not viral ) to 9-10k / semi-viral ( quality, not clickbait not etc ) from 17-20k to 14k ( same reach ). Ratio 1k likes to 5-6k reach ( December stats ), now 1k to 8-10k ratio.
Use only telegram engagement groups and DM.

Any tips?

I don't believe that deleting ghost followers will increase your post engagement.

It's possible that Instagram changed their algorithm to penalize accounts participating in engagement groups (only seems logical). Have you ever tried laying off the engagement groups for a bit (7+ days ) to see how that affects your engagement?

If I were in your shoes, I'd identify all possible variables that affect engagement rate and weight their feasibility.