u/No-Peanut-264

I'm new to this. I've got a switch lite but I want to improve the storage, processing speed, battery, and screen. What do I need to buy from online?

Any otger ways I can improve my switch lite to 2026 standards?

I got both elements but before getting to the boss for the "container" of each element the game froze and I had to reboot the game on Switch 2.

After doing so I lost the key both times and now I'm stuck 💔 Any help?