Today, I'm learning a lot of words. Today, I'm learning a lot of words.

Or "I learned"

I would like to write in them in phrases. I would like to write them in phrases.

I would like to write in the phrases. I would like to write in phrases.

I will pay a visit to my father's friend, he is sick. I will pay a visit to my father's friend, he is sick.

I will pay a visit to my father's friend, since he is sick. I will pay a visit to my father's friend, since he is sick.

I pay a visit to a friend, it wahas been a long time no see.since I've seen them. I pay a visit to a friend, it has been a long time since I've seen them.

"Long time no see" is a set phrase that is usually only used by itself, not in a sentence.

I payid a visit to a friend, it wahad been a long time no see. I paid a visit to a friend, it had been a long time.

if its past you have to change the tense, and no see is not something you write, more something you say

I feel there will be a lot of surprise will happens. I feel there will be a lot of surprises.

I feel there will be a lot of surprise will happen.s in future I feel there will be a lot of surprises in future

You would be better to say ' I think' there will be xyz I feel is more for things like I feel sick, I feel happy, I feel scared,

I want to trust meyself. I want to trust myself.

I want to trust meyself. I want to trust myself.

I'm focused on my target. I'm focused on my target.

I'm focusing on my target. I'm focusing on my target.

This does not sound right maybe say I am focusing on my target , or I will focus on my target