I use Handbrake or MakeMKV depending on the disc. MakeMKV I mostly use for Bluray, Sometimes the odd DVD doesn't work correctly with Handbrake.
In Handbrake, I just select the Quality and keep original Audio source, I've not needed to change any of settings.
If you use MakeMKV, Its "raw" so large file size (Some Bluray files I've had are like 40GB), You can run that file through Handbrake to reduce it.
Covid happened.