I like to use .mdb file, but a week ago, I got an error: The database Gotyi4.mdb needs to be repaired or isn't a Microsoft Access database file. I am at loss what to do with repair mdb.

How many services are in Internet? I know 2 or 3 in this sphere. But next one https://onlinefile.repair/en/access.html – is the most popular now, my friends are geeks and said many good things about it

If Compact and Repair utility and other manual tricks fail or don't work, then you should try a professional solution to recover data from corrupt Access database. There are many software vendors in the market which provide Access Database Repair or Recovery tools with free demo or trial version. You can download free Access Database Recovery software to repair corrupt Access database files and to recover maximum possible data from them. It support both MDB and ACCDB files created by any version of MS Access including the latest 2016. You should only purchase its licensed version if you can see the preview of recovered tables and other data.
For free version visit : http://www.databasefilerecovery.com/ms-access-database-recovery.html