Germany

So I've just got here and read on how waste should be collected separately. What is unclear for me, and can't find any relevant info on, is what bags to use for colecting the waste.

For plastic (yellow bins), is there a particular type of garbage bag that I should use so I can throw away the whole bag including contenta, or do I use whatever bag and just dump the contents and then reuse the bag?

There are paper bags sold (for ex. at Lidl). Can I use those for paper waste and throw away the whole bag + content, or do I collect them in whatever way and just dump the contents?

For compost / bio mass, what should I do? There are "compostable" bags. can I use those, or the paper ones and just throw the whole bag, or do I have to dump the contents?

For the black bin, is it ok to throw the whole bag with its contents?

Idk if it matters, but I'm Bayern