Yes, they look like little mosquitoes.
Try using nematodes. If the larvae's cycle is disrupted, they won't develop and that will be the end of the mosquitoes.
When I buy potting soil, I put it in the oven for 30 minutes at 50-90 degrees to prepare it and kill any larvae, as they are usually already in the bag of potting soil I buy. I hope you have good luck with this method and I am excited to see how your gardening year turns out.