How can anybody possibly use a preposition as an auxiliary verb? How is it supposed to make any sense?

If you mean things like "I would of done that", I think they are just going by the sound of the words. And since "have" as an auxiliary doesn't have the literal meaning of "to have" in the sense of possession, one can argue that the auxiliary verb is just a syntactic structure with little semantic content. So, it becomes understandable for someone to substitute "of" (having no sensible meaning) to replace "have" (which really does not have much meaning either when used this way) simply because the two sound similar.

It still grates on my nerves, however! 😄

Most people don't know what a proposition or an auxiliary verb are. They simply learn how to talk by observing those around them. As long as they are understood by those those the words were intended for that's all that matters.

im going to?

Um... "to" go indicates the infinitive of go?

What I don't understand is the continual mis-spelling of the word "lose"

I keep seeing it spelled as "loose".

AND that bugs me, because you don't loose your keys. You haven't loost your cat. And most of these habitual mis-spellers are NOT "loosers"...🤣🤣🤣

I forgot what a preposition is. Let me google it.

implied missing words…
fill in the blanks

Now that is a question and a half.

What do you mean?

conversationally, yes. my sister is a backseat driver and this week when I was driving her and my niece to school she lectured me "You have to look out for the cyclists when driving!" (they should look out for me, but that's not the question lol)