Here i just share experience, just like how i do it every time without having pro account and always success. And i hope you all can do it too. If my success less than my failure i will DELETE this post. This is not about you must send me your twitter username so i will audit your guys profile. "I think that's useless work". But this is how you do it by yourself and you can continue to do it. Read carefully until you really get it.
1. Open
https://twitter.com/"your profile"
2. Settings and privacy
3. Application ( Apps)
4. Audit and Block Fake Followers ( revoke access )
5. Re-login
https://www.twitteraudit.com/ ( sig in with twitter )
Hope this really usefull.