I am basically trying to get the best out of my setup as possible (because it's poor).
Currently using a ''BT smart hub 2'' (downstairs in the main lounge) which is connected to the phone line to provide wireless internet in the house (unlimited data but speeds only up to 20mbps but in reality I often get 4-15mbps). Unfortunately my mum won't let me put a cable through on the skirts of the house to upstairs so I can get get wired ethernet directly from the router. The router is also hidden behind a curtain on the window and I have her, we will get better signal if they have it in the open, but she insists there is no room anywhere else (even though i could build a shelf or if she organised some things etc). She just started a new contract a few months ago even though I told her I would sort better (we live in a bad area but I could get 60mbps for pretty much the same or half the price) and I am now stuck with this for now. So I am seeking other options in order to get a better signal/setup but I really have no idea what I am doing and google is overwhelmingly confusing. One thing I did try recently was a power adapter but the electrics are not amazing.
I do have a coaxial cable up here for television (Though I am yet to test if it works) and I was looking online that I can connect this to a moca adapter then to a router/modem and then use that for ethernet connection to my PC.
Is that correct/something worth perusing? If so how would I connect the second modem to my ISP?
Since the HUB is a modem/router should I be buying a separate router? (to ensure I get a fastest speeds?)
Could I use a separate router to connect to the HUB through the power adapter and have a wifi signal from both routers / connect wired ethernet from extra router?
The Hub has internal signals for its wifi, is buying external antennas beneficial for the signals?
Any other options/advise?