Swimming

You'd likely do far better by adjusting what you eat rather than trying to lose through exercise. ?
No fear of infections either...

 

I don’t agree with a point that diet is the best way to go, the best way is to combine both. Increased activity increases glucose metabolism, decreased weight increased glucose metabolism.

Diet is very important but if you can I think its much better to work on both so swimming is a great idea.

The trick with swimming is doing it at a pace that gets your heart rate up a little bit - whatever that pace may be. Doing 30 lengths of chin up breaststroke does not do a great deal apart from helps stretch out your muscles a little bit unless the pace your doing it at gets your heart rate up a bit.

 

Hi @claymic. A regular swimmer here.
I wear this sort of foot protection in swimming pool. Swim socks. They prevent me from slipping, and are flexible enough for aquafit and swimming. Never had any problems with infections.
(Other brands are available)

https://www.amazon.co.uk/JIASUQI-Womens-Lightweight-Water-Swimming/dp/B07QC58RLL/ref=sr_1_8?crid=12UNNDKX3ZN88&dchild=1&keywords=water+socks&qid=1571752775&s=sports&sprefix=Water+%2Csports%2C173&sr=1-8

As others have mentioned, exercise alone has not helped me lose weight, but has helped maintain muscle mass, which is important. Though muscle is heavier than fat. I would concentrate on dietary changes for life, rather than hope exercise would suffice.
I also find that I tend to eat less when I am swimming regularly. Also that feeling of hunger some report after exercise is more likely to be a need for rehydration, so drink plenty of water.

 

Infection very rare and balance this with the oppotunity of losing weight but use rubber socks the type people with verucca's use or walk to pool with flippers on.