Fragen über die Beispielsätze mit, und die Definition und Benutzung von "Bcz"

A: I think it is text speak for "because" :)

A: I was just wondering bcz you(or u, either one is fine.) came here from such a long trip.

A: I like this video, but I can’t upload it on my feed anymore so…

잘했는데요! 거의 완벽했어요 ㅎㅎ 문맥이 없어서 이거 딱 맞는지 모르겠는데 이렇게 썼으면 될 거 같아요! 이렇게도 괜찮아요:

I like this video, but since I can’t upload it on my feed anymore…

^사실 생각해보니까 이건 더 잘어울리는 거 같아요 ㅎㅎ

A: I don't completely understand what you want to say.

I should stop sad.
Try....
I should stop being sad.
or...
I should stop being depressed.
or...
I'm trying to not be depressed.

I come here it's very sad because a loss.
Maybe try...
When I come here it makes me feel very sad because of my loss.
or...
I feel sad when I come here because it reminds me of what I have lost.