Growing herbs

I’m trying to grow some herbs, mainly parsley, basil and coriander. We planted the seeds probably end of February, the pots sit on the windowsill and get a lot of natural light and we water them regularly.

The issue is, I think we planted too many to begin with so the pots were majorly overcrowded. So under advice I thinned them out and in the coriander pot there’s only a few stems left and the parsley pot there’s a few more. But the plants are so long and leggy and aren’t really doing much.

My question is should I start again from scratch and plant way less? Or do these still have hope…