I’m not sure if i’m just blind, or is there no possibility to just draw some lines or circles on a picture or a just taken screenshot?
If not, maybe it is possible to add this? I think this is a standard feature since a long time now (the S8 was able to do this if i remember correctly)
Using Fossify Gallery | F-Droid - Free and Open Source Android App Repository instead of the default gallery would let you do this.
Yes, there are apps with more features, but wouldn’t it make more sense to add simple features to the standard apps instead of having to install a new app for every little feature? Then I wouldn’t need the standard apps in the first place.