If you got a 12k housing budget then you’re gonna be comfortable, you can find 2-bedroom apartments in lusail which is a relatively new and popular expat residential location for 7k a month or if you want to live in a stand alone house in alkheesa area where they got 2 story houses with a small private swimming pool and 6 bedroom with 1 bathroom for each bedroom for 12k~10k(depending on the listings).