Reach of account is getting really low

Hello guys I am an artist where I post my handmade stuffs and paintings, few decor tips right now I have 3800 followers I used bot followers last year as reach was low. I am currently posting one post a day using 20 around hashtags and tagging relevant accounts but my reach is really low. I tried promoting the post but I guess it hardly gets you any followers . Plz suggest me right techniques as many of you are experts in marketing through insta.

you need to clean up and remove those fake followers first as thats whats dragging you down