Inquiring about the compatibility for my Laptop

I have Asus TUF gaming laptop with specifications being : Ryzen 7 4800h, 16gb dual channel ram, Gtx 1660ti mobile (80tdp) max.

In 2025 and 2026 my 16 series mobile gpu is struggling and meanwhile the prices in the market are pretty damn expensive, i was thinking to get a external gpu like a 5050 or 3060 or maybe something my computer can handle, please suggest me budget friendly options and steps on what type docks to use.

By the way i have an extra m.2 slot completely unused, if that helps.