I almost missed someone earlier when they used DSS, to me, that department of social security, or the new DWP, department of works n pensions.
Mind, omg was used in a war correspondence, with an admiral sending a telegram to Churchill using omg, then stating, ... By which I mean oh my god.
Abbreviations will always be used, we can't escape that. So even make sense, but some are confusing. As mentioned by one poster, context helps a lot. The same with new words (a different thread).
I left school in 1985 with not a single qualification... No I didn't fail, I just left school and started training as a chef instead (a very long story).
I like to take Frank Skinner's approach to the English language... Moving on and developing.
In Shakespeare's day, he spoke a strange language, but not to us today, but to his peers. He added over 2k new words in common usage today, but THEN, they were new weird words!
English in of itself, is a very bastard language. There is no original language like it, as we use n borrow words from so many other languages.
Now that we live on our lovely tablets n smartphones, we use a very abbreviated speech. Part of that is due to screen size, and speed.
I think while abbreviations can be confusing, with regular use, you'll soon learn them. If not sure, just ask the op (original poster) or any poster.
My personal style or writing is 80% long hand, and 20% abbreviations/shortened words (not officially an abbreviation). I mean just typing 2, instead of two, might be considered lazy to some, as not "proper use of the English language", yet we all do it all the time.