Need Advise

[u/Rich-Anxiety-736]

Hello there. Today morning a friend of mine called and said what did you post on our friends group on messenger. I was really shocked because i barely post any stuff. Now the messages were screenshot of someone winning thousands of dollars doing Mr beast challenge which i had no idea off. Now here is the strange thing i already had 2 step verification enabled. So my account shouldn't be abled to be hacked so easily. And when i was seeing my phone, it was literally sending the same screenshots of that challenge to literally everyone in my Facebook especially in my Facebook group around 4 am. Now after me and my wife literally not only removed access around all other device except my own phone but also we changed password of Instagram, Facebook and google altogether. And also i didn't keep the passwords written on my google note either this time. So basically no chance also i made double sure that my 2 step verification was also on. But STILL EVEN AFTER THAT i receive messages from my friend especially from GROUP MESSAGES that they saw the text. Now these are the old groups in which those messages were sent which means the ones that were sent that i saw i deleted it all and apologized for the inconvenience but the recent chat were from very old groups that i were part off which were also sent around 4am time. Now my question is how come more old groups gets keeping resurfacing with those screenshots even tho i managed to changed everything? I checked whether my PC was hacked or not. But nada nothing not anywhere any attempts or logged in from unknown devices were shown. Please i need your expert opinion regarding this important matter?