Does dark matter actually exist?

[CloudWatcher]

12. They looked, couldn't find any micro black holes ...

If "dark matter" was because of micro black holes, there would need to be a lot of them. And they would cause enough gravitational lensing of stuff 'behind' them that we could see that they are there. And so far ... no luck finding them. One result:

Dark matter is not made up of tiny black holes

From 190 consecutive images of the Andromeda galaxy taken over seven hours during one clear night, the team scoured the data for potential gravitational lensing events. If dark matter consists of primordial black holes of a given mass, in this case masses lighter than the moon, the researchers expected to find about 1000 events. But after careful analyses, they could only identify one case. The team's results showed primordial black holes can contribute no more than 0.1 per cent of all dark matter mass. Therefore, it is unlikely the theory is true.

https://www.sciencedaily.com/releases/2019/04/190402113042.htm