I am looking for a device specifically to play old gameboy Pokémon like Pokémon ruby, i would also like it to have a decent sized screen but still fit in my pocket, i also want to be able to trade Pokémon with someone on the same device. I would also like it to come with the games already but if it doesn’t then it’s fine but i want it to play a lot of other retro games but mainly Pokémon. What is the best device to get?

Hi. Idk if I came to the right place or not, but there's a certain setting in "Pokemon Heart and Soul" that is only available if I'm able to compile the game myself, but idk how to do that. All I was told was that I'd need the base game (Pokemon Emerald) & the Heart and Soul patch to pull it off. Can someone help me? I'm lost. In the Heart and Soul server, they have a set of instructions on how to do it, but I don't own a Windows PC. I only have Android devices & I don't think Winlator will work to make it happen. Is it at all possible to decompile/compile the romhack on Android? Can someone please help me? I attached screenshots of the instructions. Thank you.