Get a good machine from a Thrift Store, charity type. Salvation Army, Goodwill, and such.
Basically you want a starter machine, simple, zig-zag, foot pedal, easy bobbin winder, loader.
Now, make a set of curtains. Is the simplest pattern there is, basically square, hemmed edges. Now get a box of single edge razor blades and take the seams apart, detwig , (remove the old cut threads) and make again.
This is basic practice and after you become proficient at assembling and re-assembling you will have relearned some of the basic stuffs and be ready to move onto more challenging projects.
Sun dresses should be next. These have the human form in the pattern and a few seams that can be frenched or rolled over.
You can also find many of those patterns at Goodwill thrift stores also.
Your purchases will be helping people in need of food and stuff and you will not be adding to the production of plastic cause it is already made, and most likely is made of metal.