If you want to grow other things, grow things you like and eat a lot of, and that grow quickly. (e.g. salads, rocket, spinach, spinach beet, swiss chard, chinese leaves are easy)
You can grow veg through the winter by sowing them earlier in the year - kale, spring greens and cavolo nero do well.
Root veg takes ages to grow.
If you have room, grow fruit bushes like blueberries, strawberries, blackcurrants, raspberries. They taste much better home grown.
They are fairly inexpensive to buy (about £2.50 in my local supermarket), but check that the plant looks healthy.
You can always ask others for cuttings, runners, surplus seeds or seedlings. (local SM, freegle etc)
I save the 'ends' and grown new plants from them. By 'ends' I mean the last bit of leeks, spring onions, cabbage, pak choi, celery, tops of carrots ...