i just use oki for okay as a shortened word because i just like this word.
lol - when something/someone surprises me positively
wth - when something/someone surprises me negatively
wtf - same as before
dunno - easier typing than "don't know"
u - easier than you
i use these words in informal context only, verbal or written (texting).
i usually do not use any of them except on some rare occasions.
"i don't know," "you too" to type faster.
lol, lmao, lmfao - easily conveys laughter
idk - no sé.
omg - es más rápido.
i use popular slang words that make it easier and faster to speak:) like omg, lmao, idk, ily, wby, k, omw, idek, idc, etc.
shortened phrases: lol, lmao, idk, btw, omg, cuz, rn, ofc, af. i use them especially in texting, since it's easier to type.
filler word: bro.
slang: cringe, based, mid, rizz, to ghost. i use them as synonyms to existing words. also, using these words creates a feeling of connection and belonging to the current modern generation (teenagers, young adults).
for you, to you, thank you so much, i don't give a f***, i don't know, in my humble opinion
because it's faster and easier to type