I was on a "loose" keto restriction earlier this year. It was interesting. I did lose quite a bit, but I didn't love doing it. Too much meat and fatty fat fats for my preference. inb4 one of you nerds tries to balk at me for saying that

My body responds well when I manage portion control and count calories. It is tedious, but works for me. Fruit and peanut butter toast for breakfast, vegetables for lunch, and more vegetables and a source of protein for dinner is best for me! Also, just even walking a couple of miles a day will do your body wonders. Pop in some headphones and go, or if it's too cold outside (like it is now), there are tons of youtube routines you can search for to just do in a room with a little bit of space. 30 minutes a day is what they say!