I have one pomegranate and two capsicum plants in pots. Pomegranate has two small fruits on it since last two months and not growing further. Similarly capsicum has few fruits but growth is very slow. Like to speak to you if you can help.
Growth of Fruits on My Balcony Pants
Certified GKH Gardening Expert
That soil appears to be ground soil. This is not suitable for container, as it is too thick, and will not function properly in container. I would suggest, either making your own potting mix, or getting a good potting mix. This would be the cause of these symptoms.
Here are some articles that will help: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/types-of-potting-soil.htm