tTo new beginsnings. To new beginnings.

tTo nNew bBeginnings To New Beginnings

Titles have special capitalization rules. "Begins" is a verb (he begins to...) and "beginnings" is a noun

tTo nNew bBeginnings To New Beginnings

I've seen this application when I was scrolling on iInstagram. I've seen this application when I was scrolling on Instagram.

I've seen this application saw this website when I was scrolling on iInstagram. I saw this website when I was scrolling on Instagram.

LangCorrect is a website, not an application. Names (Instagram, LangCorrect) are capitalized

I've seen this application when I was scrolling on iInstagram. I've seen this application when I was scrolling on Instagram.

I have been stuck with a problem whichere I couldn't speak English. I have been stuck with a problem where I couldn't speak English.

The correction is grammatically correct and close to your original sentence, but it doesn't sound very natural. I would probably say something like: It just so happens I have been struggling with a problem with speaking English.

I've been stuck on a problem which I could, that I can't speak English. I've been stuck on a problem, that I can't speak English.

This is a past and current problem, so you would use the "I have been..." structure.

I stuck a problem whichOne of my problems is that I couldn't speak English. One of my problems is that I couldn't speak English.

This problem has ruined my life, everytime everywhere and now. This problem has ruined my life.

You don't need to say something like every time, everywhere and now. Instead, you could say: This has been a problem my whole life.

This problem is ruineding my life, everytime everywhere and nowin all aspects. This problem is ruining my life, in all aspects.

This is an ongoing problem for you, and your life is not over yet => it is ruining your life. The "every time, everywhere, and now" sentiment can better be expressed as "in all aspects"

This problem ruined my life, every time, everywhere and now. This problem ruined my life, every time, everywhere and now.

But I start a new life but this situation will not be before decidesfrom here on out, I will start a new life. But from here on out, I will start a new life.

This sentence's meaning is a little tricky to figure out.

But II am starting a new life, but this situation will not be before decidesit will take time for my situation to really improve. I am starting a new life, but it will take time for my situation to really improve.

Avoid repeating several "buts" in a row. This sentence does not mean anything in English, but did you mean "decades" instead of "decides"? If so, my edit reflects this meaning.

But INow, I am starting a new life but this situation will not be before decides, and I will try to improve my current situation. Now, I am starting a new life, and I will try to improve my current situation.

I am really in delusion

I am not sure what this is trying to say. I don't think you need it though to get the overall point through.

I am really in delusional. I am really delusional.

We would typically describe the person as being delusional, rather than say they are in a delusion.

I am really in delusional. I am delusional.

I modified your sentence to sound more natural. By the way, you're not delusional. You need to practice improving your English, and you can do that here.