Poor Coverage - Best Options

[Jack_Attack]

I'm a bit bamboozled by what to do so I'll lay out my case.
I currently have 1GB fibre to the home. I think that the box is an SR200.

I'm noticing of late that the coverage has gone downhill around the house.

a) Should I contact Sky to get a better solution (boosters?)

b) Should I replace the router? (What should I get and how easy is it to set up?)

c) Should I get a mesh system?

If c, I've been looking at Eero, but I really don't know which ones to go for. Also are they fairly easy to add to my current set up. I've read on here that I just plug one into the router then turn off the wifi on the SR200 and leave the mesh to do the wifi stuff.

Thanks for any advice and guidance.

[Chrisee]

@Jack_Attack any of thise options can work. If you call Sky they will try to sell you one of their bolt on paxkages tgat extend wifi. The newest is WIfi Max which costs £7.50ma month which gets youna new Wifi 6  hub and uomto 3 pod extenders if one of their engineers agrees you need them to get a minimum of 25Mb/s in every room. This option doesnt work with Sky Q boxes

Replacing the router is possible but requires you to set it up yourself as Sky will not support third party kit. Forum members usually can advise but not every router can be used the range from Asus seem popular and are relatively easy to set up. You losecthe Sky phone line with this option

I will declare an interest in your third option which is what I use myself. I bought a Tp-Link Deco mesh system with 3 satellite units Eero are similar. One of these units is connected to my Sky hub normally you would turn off the hub's wifi but In don't need to. The Deco units are configured in Access Point mode so the hub still acts as the router. The other 2 deco units are on different levels in my home and provide a minimum of 200Mb/s in every room which is ample. My system is wifi 5 but yiu can pay more to get wifi6 if you want and your devices are also wifi 6. 

Before you spend money consider tgecspeeds you actually need as while it is possible to get 900Mnb/s in every room it will cost a lot and 99.99% of users never need that speed.

[Jack_Attack]

Great. That's really useful. I was leaning towards that last option. I'm not precious about speed, I just want to make sure I get good coverage around the house. 
Seems to be that I just need guidance in which Eero to get.