After Budget and Brand you need to know what type of photography you will be doing.
There are a lot of photography types, you need to search for what type do you like the most as each type of that may have different aspects and specifications needs to be there in your camera.
So, what does type of photography mean?
In is mainly what do you take photos of, like for example:
People photography, Animals photography, Nature photography, Events photography, Wedding photography, Sports photography, Product photography, Food photography and lots more …
You need to study the equipments needed for the type you want, then you will be able to look at some special specifications when choosing your camera.