Personally, I support my local team, Flamengo. Flamengo may not have many all-star players such as those in elite clubs like Barcelona or Bayern, but to me, Flamengo will always be my team. I have friends who root for teams such as Barcelona and Real Madrid even though they are not Spanish. Some of them don't really act as if they care as much as others. My opinion is that you should root for the team that has the deepest emotional connection to you, it shouldn't matter if the team is from a different nation or from the same.