There are generally two ways to shrink data files: either use the dbcc shrinkfile command to shrink files (to the extent that only existing data can be accommodated, for example, a file 2G, with a data volume of only 50M, can be shrunk to 5 1M).

Either do data cleaning, pick out those useful data and export them from the current database to a new small database with DTS wizard. Just like moving, throw away the useless, and the rest will naturally become less.

It is best to shrink the log file with dbcc shrinkfile first, and then make log backups regularly. When making a backup, the system will automatically truncate it to control the backup frequency, and the log will generally not grow again.