My house is 284m² and has 2 floors, on the 2nd floor there are 4 rooms. In one of them I have a 1gb/s router with a Deco X20. In the room opposite, the coverage is ok, in the room next door is also ok, but in the room diagonally the coverage is not there at all. On the 1st floor there is a living room, kitchen, hallway and 3 bedrooms. There is a second deco unit placed in the hallway which makes the internet in the hallway, but outside the hallway there is no internet at all anymore. I want to have good coverage (preferably so that I can also connect a printer there with a cable) in the office and the bedroom which is at the end of this long hallway. How can I do it? (preferrably budget-friendly)