young chili plant pests

Hello fellow farmers, what surprised me was seeing the condition of the chili plants in the land that had just been managed for a few weeks was actually very bad, with the chili plants being so unhealthy and constrained by damaged plants, is this a pest disease that can be cured from the affected plants?

I don't understand the problems and obstacles of chili plants like this, where the yellowing leaves make the chili plants worse day by day, do I have to replace them with other plants?

What an obstacle that makes me want to continue to try to give the best for the growth of my chili plants, and hopefully with what I do will give better results.

thank you
@sallamah