@Paulaszy depending on the type of construction and layout of your home that is not ygst unusual. Many himes need muktiple WiFi sources to get usable WiFi in every room. Sky sell a pckage called WiFi Max (https://www.sky.com/broadband/wifi-max) which can get you up to 3 extenders lent or you could buy your own equipment.
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65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
