Followers and likes that come from the same user

Is there such a service to buy followers and then likes that come from those same users? This would be super useful to help the algorithm as your engagement is coming from your own following rather than random users.

Not really.
The accounts that are being used in SMM's have a short shelf-life.
They are either getting banned super fast or simply being "thrown away" after using it for a bit.
The best solution would be to make your own accounts with proxies and an anti-detect browser.