Best way to grow accounts with money

Hi everyone,

I'm a fitness model and I produce my own fitness high quality content. I already tried the F/U method and reached 60k followers with it but only got 2k likes per photo so I trashed the account.
Now I want to start from zero and inject money in a new account (~1000€/month), what would you recommend me to do ? Buy shoutouts ? Powerlikes ? Has any of you tried these methods and can tell me what worked the best for you ?

Thank you.