I know everyone's been saying it a while but can't stress how much difference and air fryer makes. People are keen to call them a fad product but they're best to stay - some frozen foods are even starting to put times on for them. They pay for themselves in no time and no need for a fancy one unless you really want one.
Our oven has been on about 4 times this year.
Slow cookers are great too but both make very different types of food. I'd recommend both - love my slow cooker for big batch foods but air fryer cooks better and nicer than an oven, and really fast. Also great for rehearing leftovers