Which sentences are correct?

I am confused about how to obey the sequence of tenses.I am just confused about these sentences,

If the first sentence is in past tense then the remaining should be in past too.

Example:
I thought he would come. Does “would” indicate probability in this sentence? I mean he has not come but maybe he will come.

I heard, you met with an accident.
OR
I heard, you had an accident.

—These sentences indicate that the “subject” knows that he dfinetely met with an accident.

I thought he is angry with me
I thought he was angry with me.
I thought he would be angry with me.

As angry is an adjective So which one is correct from above or all are grammatically correct?