If you intend on creating the same kind of games like you would in RPGM then i suggest you stay on RPGM. I presume you just need to find a different version or edition or something because i played a ton of RPGM games and most of them work fine without any of the prerequisite shenanigans. I don't use RPGM myself so i don't know for sure. But if you are open to create something different of in a different way Godot and Unity are basicaly your only options. They are popular and relatively simple to use. Though you should learn coding on C# to use them.