My mornong glory’s leaves on my balcony has some problems. I’m not sure what could be the issue, some other plants show similar symthoms (celery’s leaves for example)

Can I ask for help from someone more experienced? I don’t know what I’m doing wrong.

I live in central EU, my balcony can get really hot, like 30-35 celsius. It gets direct sunlight from around 1-2 afternoon to 6-7. I water my plants daily, because of the heat, the soil dires quickly

Backside of the leaves: