I have been dieting

Body weight tends to fluctuate by a few pounds. It depends on the foods you are eating, and hormones can also have a major effect on how much water your body retains (especially in women). Also, it is possible to gain muscle at the same time as you lose fat.

Could be water weight, slower metabolism as the body may thinking starvation mode or if your exercising it could be muscle gain. You didn’t give a timeline but if you just started be patient.

It's probably a fluctuation in water weight like blissedbunny said. Weight loss is never linear. If you keep up the hard work and stay in a caloric deficit it'll pay off eventually. It has to.

One pound isn't bad, you have to consider clothing, building muscle, water retention and fecal matter as well.

Could be fat, muscle or water and even fecal weight

The scale is not specific on what you gained sometimes

Maybe you need to workout as well?

Same here, seems to be water weight

Water retention .