I feel a bit ashamed I did not snap a picture of the damage on the pepper leaves. There were seemingly so many issues that i just left that out while trying to remedy the issue. I don't know whether it was insect or fungai.
Actually, you have done remarkably well to generate so much good response.
Gardening is about learning. I have grown basil for fifty years -each summer. This year my seedlings stool still for about three weeks after being planted in the ground. There were unpredicted cold nights and cool days. I did nothing but watch and they came good when the heat arrived.
Next year whatever you decide to do, just observe and don't be too concerned about the outcome. Plant a great diversity of crops. Your peppers might be alright, or you might discover why they are being attacked. It's really about you and your well-being.