Which (2016, 2019, 2022) are you connecting to? Are you managing on-premise servers or Azure SQL ?
He tried FTP mirrors. Nothing. He tried a Russian software archive that made his antivirus scream. sql server management studio 18 download
"Cannot connect to SQL Server. The server version (10.50.6000) is not compatible with this client." Which (2016, 2019, 2022) are you connecting to