G00gle Penalty question

Hello everybody,

for a few month, a got a penalty of a domain. Than i started a similar project and this domain had zero rankings. Than i registered another domain and started it, also pretty bad rankings and zero traffic.

Than i thought, that Google has banned the IP of the domains? The domains were on the same hosting account. Is this possible?

Maybe i have to start it with a new domain of a completely different hoster and a different google search console account with a VPN?

Hope you can help me out here and give me some input.

Yes, it can happen. It's pretty rare, but if the hosting was abused XY times over, then it can happen.

Yes, it happens, once I hosted 20 sites on a single server => one got de-indexed, and within 48 hours - all the rest got de indexed

Bad neighborhood is a thing.

Always buy dedicated IP for different sites. Pretty helpful.