I wish ...

If only / I wish + past simple

(to talk about a present situation that we want to be different.

If only / I wish I earned more money.
If only / I wish I had more free time.

If only I wasn't late for school. ( I am usually for school)

I wish I wasn't late for school. ( I am usually for school)

If only / I wish I didn't feel sleepy in class. ( I usually feel sleepy)

If only / I wish + past perfect

( to talk about a past situation that we want to be different)

If only / I wish I had apologized.

If only / I wish + would + infinitive

(to complain about a person, a thing or situation)

If only / I wish Jack wouldn't tell lies.