UAE is 0 tax on income. A state like Ajman where it is cheaper to rent than Dubai or Abu Dhabi. Set up and ongoing costs are cheaper.
When you are in Dubai you can just stay at a hotel or Air BnB. You dont have yo go to Ajman.
You can get a freelance license in Dubai but you are limited to what you can do. It allows you to open accounts and get residency. The cost is more expensive than an Ajman overall. Both will give you the tax
certificate you require to shield you from the Italians, so they wont share that info on CRS and therefore Belgium wont know anything