I have installed Krita 4.3. During the review, I found that a lot of taps were installed with the predefined brushes. I don't want to have If I delete them, will they only be deleted? And in the tap "all" all brushes stay in that I can make my own. Thanks for answers

I'm sure you mean 'tags'.
'All' isn't a tag, it just means 'all brush presets'.
You can't remove the default tags from the default brush presets.
You can create your own tag and add it to a default brush preset and later remove it from that preset.
With brush presets that you create, you can add or remove any tag.
The entire resources system is being redesigned and reworked at the moment and the situation may change in the next release, or when it's ready for release.

I am excited to see when the new resource system comes. And I can delete these unwanted tags. Others also have this problem. What are they doing?