I usually text with proper full words and grammar and I don't write '2' instead of 'to' or '4' instead of 'for' but I have to admit that I use shortcuts sometimes when I'm in a hurry like 'idk', 'ikr', 'lol' 'ttyl', etc. but I don't use numbers though. I also use shortcuts when I'm joking. I hate it when people write 'K' like how hard is it for them to write 'Okay' or simply 'Ok'? But if they are pissed then I can try to accept that. We all have different ways but we should just accept that everyone is different.