Time just fliedew.

I’ve never expected this virus screw to all my plans, but while I stayed in Spain, it was really fun to message [you] and play Minecraft together.

"Message" needs an object. "You" makes sense to me based on context, but maybe you have something else in mind.

I brought this cup to give it to a friend who I would meet in Spain and the friend to whom I want to give this cup is you!

IOn the cup, It’s written my city’s name, Busan, and one of the most famous district in Busanit, Haeundae, are written on the cup.

I don’t live in theat district and it’s a little far from where I live, but there is a beautiful beach and a cinema centwhere I love to watch a movies.

"I don't live in the district" is grammatically correct, but "that" is necessary here to make it clear that you are referring to the district mentioned in the last sentence.

When you come to Busan, I can bring you to wherever you want to go.

I put in some flavored almonds and Kkimchijeon, too.

Time justhas flied.

I think has is more natural here

I’ would have never expected this virus to screw up all my plans but while I stayed in Spain, it was really fun to message and play Minecraft together.

I brought this cup to give it to a friend who I would meet in Spain and the friend I want to give this cup to is you!

In the cup, It’ is written my city’s name and one of the most famous districts in Busan,: Haeundae on the cup.

I don’t live in the district and it’s a little far from where I live but there is a beautiful beach and a cinema centerwhere I love to watch a movie.

We wouldn't say cinema center. Cinema alone suffices.

When you come to Busan, I can bringtake you wherever you want to go.

I put some flavored almonds and Kimchijeon, too in the cup.