Hello, these are abbreviations sometimes used in text speak. I can’t write the answers here as it contains ‘sensitive language’
But some other common ones include:
LOL - laughing out loud (when you find something funny) / however can also be used by some people to mean lots of love
TBH - to be honest
TBF - to be fair
TMI - too much information
IRL - in real life (as opposed to online)
BRB - be right back (if you are online and need to go away for a few minutes)