Screen no longer works after battery replacement

I recently changed my iPhone SE (1st gen) battery and encountered a weird problem. The iPhone SE screen stopped working. I dismantled my iPhone 5S screen to replace it.

The weird part is, my iPhone SE screen works on my iPhone 5S. So I don't think I have broken anything on the iPhone SE screen. May I know why is it so?

I probably broke something during the replacement. The home button on 5S doesn't work now. I don't think is because of the screen because it works on SE.

Summary:

SE screen doesn't not work on SE body and 5S screen works on 5S body.

5S screen works on SE body and SE screen works on 5S body.

Home button doesn't work for both 5S screen on 5S body and SE screen on 5S body.

Home button works for 5S screen on SE body.