So, my problem is simple - little to no wifi on my ground (1st) floor.
The solution may or may not be simple. Ideally I don’t want to use a repeater.
2nd floor optic fibre connecting to box from the national telecom company.
Network cable from that box to a ~$100 router, and network cable from router to wall.
Some kind of wired network in the house that is connected to this, with outlets that take network cables on 1st, 2nd, and 3rd floor.
A desktop computer on 1st floor plugged into this wired network.
The floors are separated by concrete, which explains the poor signal on the 1st floor.
I know that our current router can only function as a master, not a slave or repeater.
Can anyone with experience in these matters suggest how best to extend our wifi to the 1st floor?