Just my opinion, you can buy (small) kits, where you, yourself install everything (In your garden, or on a flat roof)................. There was a chap on YT showing how he did it, it was to run his "home office" Lights, mobile phone charger, computer and a few bits, and he had battery storage, all of which worked for him. He also pointed out that it was just a hobbyist project, and as such he accepted the fact that what he had done, although it worked very well was not financially worth it.
Some time later, I looked into installing some solar, for "experimental purposes" and I too soon came to the conclusion that to have something "hobbyist" that works, is not cost effective, if you are looking at solar, do it properly, but it will cost quite a few £k so should not be treated lightly. (One of the things most forgotten is the cost of scaffolding to get to the roof to mount the panels)
I wish you luck.