I've heard that at times Muhammad was unsure whether an angel or a demon ("jinn" in Arabic) was speaking to him as he was writing the Quran.
 https://www.perplexity.ai/search/was-muhammad-ever-confused-abo-xJVSwabSTo.pRyHNbLtfFA#0

I'm sure you're familiar with Ephesians 6:12: “For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the cosmic powers of this darkness, against evil, spiritual forces in the heavens.”

https://ref.ly/Eph6.12 via the Logos ,#Bible Android app.

I'm still grappling with the idea I've recently become acquainted with that God set up a divine council, composed of the "sons of God", who also are called angels in Scripture, and that He divided up the nations among them and allowed them to rule, until He took away their rulership for abusing it, and also took away their immortality (see Psalm 82). There are various passages in the Bible used to support this interpretation, although it's not clearly laid out like this. 

These different angels, also called princes, ruled over various territories, such as the Prince of Persia, whom the angel Gabriel had to contend with in Daniel 10:13, and Michael the archangel, who is called the Prince of the people of Israel (Daniel 12:1).

I'm sure there are still evil entities (fallen angels?) working behind the scenes and perhaps even entering into certain individuals to advance the kingdom of Satan. And COVID and depopulation is probably a part of that agenda, along with war, famine, death, LGBTQ+, transgenderism, transhumanism, statism, communism, etc.