If 90 days have already passed without a visa, but to go back to Europe ...?

In order to stay in the country legally after the 90-day period, you must submit an application for humanitarian protection to the migration service at the place of temporary stay.

Also, after the expiration of the 90-day period, you can go to countries that provide additional days to the European visa-free regime: Croatia, Bulgaria, Cyprus or Romania. You can stay there with a biometric passport for another 90 days within 180 days. These days are added to the 90 days of stay in Schengen countries. That is, you can stay in the countries listed above for 90 days for tourist purposes, this will be counted separately from other countries of the European Union that have signed the Schengen Agreement.