Was ist los mit meiner Pflanze?

The other name for this bug is fungus gnats. Separate this from all the other plants. It can spread. You can get rid of mealy bug but it takes a long time. You have to pick out every single bug by hand. New eggs will keep hatching, you have to get rid if those as well. You have to get to every single one. A few hours of strong sunlight also helps. Don’t water your plants from above the soil. Instead let it soak from the bottom. Also let the soil to be dry before watering again.