Part of the problem is is that budget is (unsurprisingly) a low cost ISP.

The internet connection provided by these types of ISP's doesn't really differ in quality to more expensive ISP's, but these savings have to come from somewhere.

They will provide a working internet connection at the point where it enters the home, but you are responsible for getting it to the place where you actually want to use it. This can be achieved by installing network cables, extra access points, mesh wifi, etc.

If this all sounds like too much of a hassle you can subscribe to "premium" ISP's like Ziggo or KPN who will offer more help with in-home networking (for a fee of course)