The iFixit Store has a couple of products that might help with your stripped screws.
[product|IF145-127|Screw Extracting Pliers: Damaged Fastener Remover|new_window=true]
[product|IF145-118|Precision Screw Extractor Set: Small Stripped Screw Remover|new_window=true]
If stripping screws keeps happening to you, I'd suggest you invest in a better screwdriver. A properly fitting screwdriver should not strip the screws in a Nintendo Switch Lite.