You should have things you don't do, places you don't go to, substances you don't take, words you don't say!
By all means, have Principles and Standards.
You can be happy for someone’s win without linking it to faith.
Romans 12:15 says “rejoice with those who rejoice.” It doesn’t say “only if they believe like you.”
Celebrate the achievement. Your faith guides your life, not theirs.