I am new to 3D printing, having just purchased an Ender 3 V2 about 4 1/2 months ago. Not knowing anything, I also purchased some no-name SLA filament off Amazon: https://www.amazon.com/gp/product/B093PTTFPJ It seemed to work fine for a while, having made about 6 or 7 successful prints, but then I started having problems with the extruder not feeding. Sometimes I would hear clicking and fortunately be able to pause and rescue the print, pulling the filament out of the hotend/bouden tube and extruder, snipping it off and starting anew. Other times I didn't catch it in time, only to find it "printing" with no filament above the model, the extruder drive turning but not pushing filament. Sometimes the filament would wear through and break at the extruder drive gear.

I still haven't nailed down the actual cause; I replaced the nozzle with the spare nozzle that came with the unit, but that didn't help.

I don't know if the filament is the problem, but nonetheless, I still would like to know what brand(s)/suppliers would be best to buy. My Google searches in this vein have not been very helpful, other than people saying to get good quality filament, but not saying which is good. Currently I am only printing with SLA.