Most likely, this is a nightmare that looked so real to you that you thought you were awake.

Recite ruqya and drink loads from its water. You must stick to your daily adhkar in the morning, evening, before leaving the house and  before sleeping. Read surah Al Baqarah, at least the 2 last ayat, before sleeping.

Sheikh, what should I do when felt strangled and not being able to move even a finger in my sleep? I get to read out some surah and ayah but sometimes my tougue is being twisted so won’t be able to. They try to scare me but I don’t panic as I am busy trying to read the surahs out and wake up.