I assume that you can walk in many big box stores and buy a Dell computer or a HP computer with preinstalled Linux. I am not sure about brick-and-mortar stores

I assume that you can walk in many big box stores and buy a Dell computer or a HP computer with preinstalled Linux. I am not sure about brick-and-mortar stores, because I have not used such stores for many decades, but with on-line shopping it is certainly easy to find a Dell or HP computer with preinstalled Linux that supports the hardware as well as Windows. Moreover, choosing Ubuntu over Windows frequently saves at least one hundred $. I have such a Dell laptop (Dell Precision), which came with a preinstalled Ubuntu that worked perfectly (even if I have wiped it and installed another Linux by myself, because I do not like Ubuntu).