wtf is going on

this is kinda a vent post sooo youve been warned.

I have a group of online friends. we met back in 2022 and we're still talking to each other. Obviously times have changed and some of them kinda moved on and don't talk as much as before. Today one of them had a mental breakdown and left the group chat and most sinister thing to me was that two other friends just said "ok" OK??? WTF GUYS. WHERES ANY KINDA SUPPORT OR AT LEAST CONCERN. I GENUINELY START TO QUESTION DO I REALLY KNOW THOSE PEOPLE OR I ONLY KNOW THEIR PAST SELVES. ITS KINDA TERRIFYING TO EVEN CONSIDER THAT THEY MIGHT'VE BECAME SOME HEARTLESS JERKS AND THEY GIVE ZERO FUCKS WHILE IM STILL CLINGING TO OUR FRIENDSHIP LIKE A LOST PUPPY

Should I still hold onto hope that they're nice people or should i drown in negative emotions? 

Also should I tell them about my feelings or should i just stfu?

UPDATE: i talked to em everything is fine i was just emotional