What kind of Pests?

They look like root aphids to me... and you need to get rid of them if that's what they are. This article might help you identify them because, as ernesttwwg said, it's hard to tell from the photos you've given us... https://www.trifectanatural.com/problem-identifier/how-to-kill-root-aphids/ - and will also give you several ways to treat them if they are indeed root aphids! Good luck...

I can't zoom in close enough to count how many legs they have. Basically, if it has 8 legs, it's probably dirt/soil mites. They are harmless and no need to worry. If they have 6 legs, they might be root aphids. These little buggers need to die because they eat the roots of your plant. Diatomaceous earth will tear them up, cut them to ribbons, and take care of the problem. I hope this helps.