When I bought my flat in 2014, my (soon to become) DH persuaded me to buy a micro air as he and his late wife had used one for years. It’s perfect for cooking for me (he lives partly in France) or both of us.
Mine is a Kenwood and usually in daily use when I’m home. In fact, I’ve only used my main oven once in eight years! I also have an air fryer in regular use and a gas hob. As I have a smart meter, I can see how little electricity is being used by checking the display in my living room.
I would advise you to consult the handbook initially but once you start using one, you’ll be converted! Good luck! ?