You can run the cable along the skirting board

Can you route them under the floorboards or through the ceiling space?

Get an electrician to see the job. They’ll be able to give you estimates for various options, chasing in interior walls, doing a run outside, or possibly in ceiling cavity. They aren’t that expensive.

If you can go up in to an attic or down to a basement or crawl spapce directly above or below that floor, that would be the easiest.

If not, drill the walls, put in metal or plastic conduit or other allowable raceway where it is minimally obtrusive to the room ifpossible. Pull bulk calble throught the conduits make sure conduits or other raceway will accomodate all the wiring you need, along with bend radiuses. Look for 40% +/- fill after the cabling is in.

I fail to see how a LAN connection would help you if the bottleneck is the ISP

They make em wireless now they calling it WiFi or wirelessfireless or something idk

You could try power line ethernet adaptors instead of cutting up your house with cable.

Also, there’s no right way to do it exactly it depends on your local building codes. For me, if I run cables though any walls it null and voids my insurance policy as it breaks building codes to have anyone other than an electrician do it. YMMV depending on where you live.

Drill a hole, cable is only about 6-7mm in diameter.

I’ve used IP-over-AC in the past and it worked well for me. There will be some data loss but it’s a lot less of a hassle to setup. If you own your home though, I’d probably just run the Ethernet cables. If you don’t want to drill holes, run the cables along trim and use coax staples to attach them to the wall or trim.

I go thru the floor but my house is made of wood and drywall.

Go up and then come down? What is the ceiling made of?

Brick house here. Initially I only used WiFi and powerline, but the powerline had to jump to another ring circuit. I got about 150 MBps so not too bad as it was faster than my ISP.

I drilled a hole about 2m high in my living room wall to outside. On the inside I put a single junction box to mount my WAP to. I used a scutch chisel to cut a channel down to ankle level and put a double box there. I put a conduit pipe between the two boxes and fastened it to the brick with all round band. I used outdoors LAN cable from the double socket through the conduit to the WAP and then 3 cables going outside and then up through the roof into the loft. I used modular euro sockets; I would recommend them.

Drilling and chiselling brick and then plastering and painting took a long time and was hard messy work. I could have used some plastic trunking stuck to the wall but I think that’s quite ugly. I don’t care about the cables attached to the outside of the house; I already had multiple external cables.

If I was more skilled in building work and more patient, I would have run cables under the floors and under the stairs.

Mm you can always pass an Ethernet cable through the corridors and cover it on the wall with a “channel” or something . I passed it from first floor downto the basement through a window of the backyard around30 meter minimal loses barely visible

unused coax? use moca adapters

If you can’t do it correctly, maybe something like monoprice slim run cables tucked under baseboards? I see you’re in the eu so monoprice isn’t an option but I’d bet there are other places to get slim Ethernet cables. They’re like a spaghetti noodle in thiccness