Package Microsoft.EntityFrameworkCore.Sqlite 5.0.0-rc.1.20451.13 is not compatible with net50 (.NETFramework,Version=v5.0) / win7-x86

I had the same issue:

I updated my Visual Studio program from version 16.7 to 16.8 and now, problem solved!

I checked update manually

This solution is written in the comments of this question but I wanted to make it an answer to help others like me