私はLGBT問題など国際的な社会問題の解決に取り組みたいって英語でなんて言うの？

質問者様のお求めの英語は次の通りです： 「I would like to work on solving global social problems such as LGBT issues」

「私はLGBT問題など、国際的な社会問題の解決に取り組みたい」と伝える英語表現は、"I want to tackle international social issues such as LGBT rights."です。次にあなたの質問の補足を含む完全な文を以下に提供します: "After entering university, I know that it could take some time, but I am considering working on resolving critical global issues, particularly within the LGBT community, by being part of an international organization."