Hardcore solution: disable your acc for 72h, don't delete it, disable it.
No, this doesn't affect algo.
Because if you're using an automation tool amd you manage multiple accs, you will get them banned if each acc doesn't have a fiff IP on it.
You need to use a US proxy so the algo sees that you're postong from that location. This is most important. Better favtory reset the phone, buy a proxy and start a new account.
There's no fixed solution. Start slowly dirst day as a person do. Increase slowly. I lf you get any message that they see you're doing something 'automated' just stop and resume slowly.