btw - by the way
idk - I don't know
idc - I don't care
ASAP

- as soon as possible
ofc - of course
lol - laughing out loud
lmao - laughing my a** out
ppl - people
rn - right now
imo - in my opinion
imho - in my humble opinion
ily - I love you
fyi - for your information
nvm - never mind
wywh - wish you were here