Talk to your friendly local recycler....
We have a local firm that takes ex-business laptops and refurbs them, new SSD, etc. I've kitted the whole family out with them over the last couple years. Start at less than £150 and go up depending on spec, way less than half the price of a new one.
Just got myself a refurb i5 8Gb RAM 14" Thinkpad, and it's great, plays World of Warships no bother at all.
SSDs are what makes an old laptop so much better, wife has a Toshiba she really likes (because of the keyboard mainly), had it about 3 years and it was 2nd hand when we got it, £40 for an SSD and an hour or so to re-install W10, and it's at least 10 times faster. Cheap upgrade that really extends the life of a laptop.