I got a 3D printer in December (Ankermake M5) but haven’t been having those issues. When I first started it up the filament was coming out a little stringy like you described but I ran the extrude function a few times and then printed a test file without any issue. I did notice the filament was getting stuck on the outside of the nozzle when running extrude, and had to spend a minute or so get it to separate and stop that.