fFirst First

i was just wondering., i was just wondering,

i I was just wondering. I was just wondering.

i am just wondering., how my life has changed? i am just wondering, how my life has changed?

I would say either, "I am wondering" or "I have just been wondering." This is also not a complete sentence and I would have connected the two sentences together.

i I’m just wondering. I’m just wondering.

i I’m just wondering. I’m just wondering.

i I am just wondering. I am just wondering.

how my life iswould change if he loved me? how my life would change if he loved me?

hHow would my life is change if he loved me? How would my life change if he loved me?

how my life is change if heDoes he still love me? Does he still love me?

When you start a new sentence make sure you use a capital letter. I would also change the sentences to "I am wondering how my life has changed. If he still loves me?"

hHow my life is changes if he loves me? How my life changes if he loves me?

how my life iswould change if he loved me? how my life would change if he loved me?

Are you talking hypothetically?

hHow my life iswould change if he loved me? How my life would change if he loved me?

we cWould achivehave us marry or we could have break up? Would have us marry or would have break up

I think you meant marrying with „achieving“

we could achive or we could break up? we could achive or we could break up?

not sure what you are trying to say sorry

we cCould achive or wewe stay together or could we break up? Could we stay together or could we break up?

For this sentence I am not sure what you mean 100%, however, for my purposes I am going to assume you mean stay together or break up. If I am correct in my interpretation I would say, "Will we stay together or will we break up?" Also saying "we could" uses the structure of a statement not a question. In this case you should just switch them around to form a proper question.

wWe could achivework out or we could break up? We could work out or we could break up?

we could achivebe together or we could break up? we could be together or we could break up?

wWe could achivestay together or we could break up? We could stay together or we could break up?

nobody can knows, unfortunately. nobody knows, unfortunately.

This is grammatically correct. However, it make the sentence flow better if you put unfortunately at the start with a comma. You could say "Unfortunately, nobody knows." or "Nobody knows, unfortunately."

nNobody can know, unfortunately. Nobody can know, unfortunately.

nobody can knows unfortunately. nobody knows unfortunately.

nobody can know unfortunately.Unfortunately, nobody knows. Unfortunately, nobody knows.