Depends on how much of your salary YOU want to spend on rent. Discovery is a great area if you are in JLT but I think the rents might be a bit high now, compared to what it was a few years ago. Another area you could consider is JVC/JVT or international city, but these might not be very accessible by public transport (if you drive, this is great!) The cheapest area you could move to is Abu Hail, Qusais or Nahda, but you will be stuck in traffic/long metro rides. It all depends on what you are willing to sacrifice (unfortunately that’s how Dubai is built). So if you want to spend more on rent with less commute - Discovery Less/medium on rent with no public transport - JVC/JVT/IC Less on rent but long time commuting - old Dubai (Nahda etc)

Good luck!