The only important thing to be happy is to have a poke girlfriend and a poke adventure everything else is irrelevant. Being rich doesn't make you happy for long, even if you're a billionaire you'll never be as free as a pokemon trainer. Unfortunately you live in a boring world and even if you found the pokemon isekai you probably wouldn't be happy because your adult soul is already rotten and you'll never feel things as deeply as a teenager or a child.