look at underside of leaf.
insecticidal soap, which you can make at home using standard dish soap, can effectively control many soft-bodied plant pests, including aphidz, mealybugz, thripz, whitefliez, spider mitez and scalez
You can look into anything with Pyrethrin should help, or that spinosad that ElGato linked. But know both of those are super toxic to bees. That shouldn't be a problem indoors, but just a heads up. Gluestrips should work too, but slower. I might hit them with something and then put up gluestrips then keep them rotated out when they get full/stop working.I just checked and there was actually a tiny white flying gnat, so only definitely thrips. Can I use adhesive strips to attract them? if so, is that enough or am I forced to use something else? the plants are starting to bloom