A mark of good Islam is minding your own affairs. The Prophet ﷺ said: “Part of a person's good Islam is leaving what does not concern him.” (Tirmidhī — ṣaḥīḥ). Do not pry into others' affairs, and guard your tongue from what brings no benefit.
العربية: عن أبي هريرة رضي الله عنه قال: قال رسول الله ﷺ: «مِن حُسن إسلام المرء تركُه ما لا يعنيه». (الترمذي).
Before speaking or getting involved, ask: does this concern me and bring good? If not, leave it.