When like is used as a preposition, can you add a sentence after it?

I think I can. The result is right, but in the process of understanding, there may be a little controversy in thinking!

Examples are as follows:

No one sings blues like her. ? No one sings blues like her.

The result is not what I expected. ? The result ran counter to my original intention.

Like I said? (= As I said before)? You are always welcome to stay. ? As I said before, you are always welcome to stay.

She acted as if this place belonged to her. ? She acted as if this place belonged to her.

In the above example, like is followed by a complete sentence, although in the Oxford dictionary, this usage is classified as "like belongs to a word and like is interpreted as a conjunction". In fact, I just saw the sentence "I think phantom threat would have used this jar very well". This makes me curious about "like". In my opinion, in fact, the whole sentence behind can be regarded as a "big noun", so it makes sense that it and the "quasi-preposition" together form a prepositional phrase as the main adverbial.

But if someone insists that "like is followed by a sentence, like is not a preposition, but a conjunction", it is not impossible to explain! Why don't I want to use "like" as a conjunction? Let me talk about my reasons: because I don't know, if "like" is regarded as a conjunction, it should belong to "a conjunction in a coordinate conjunction"! Or "conjunctions in degraded conjunctions"? I don't know much about this, and I don't know what the answer is! But from the above example, I think the status of the first two sentences is different, so taking "like" as a conjunction should actually conform to the understanding of the degraded conjunction, so "like+ sentence" is a clause. So, take "like" as a conjunction, "this is the main sentence, not the complex sentence"!

The conclusion is:

If you use "like" as a preposition, you can follow the sentence, but you should treat the whole sentence as a "big noun".

If you take "like" as a conjunction, you can add a sentence after it, but at this time, like should be a "degraded conjunction in conjunction" rather than a coordinate conjunction;

note:

I hope you can have your own thinking. This is my idea. There are many personal factors. I hope you can read them selectively. Anyway, that's what I think of this problem at present! Because: I don't see what kind of conjunction "Xiang" is. I know it has a conjunction, but it also has a preposition, after which you can add sentences. )