It's not the age that is the issue. The term "squeaker" refers to younger players who are disruptive and uncooperative teammates. They tend to shout and rage a hell of a lot. They're just toxic. Because they're younger they typically have a lighter voice, hence the term. If you're a good player that works well in a team and can take a loss with dignity, then most other players won't have a problem with you. Hang in there kid.