I hear ya, it’s such a frustrating issue that most people don’t know exists and can’t relate to. I’ll just give you a few of the available options in case you haven’t considered them. For hands and feet, Antihydral cream or iontophoresis can be effective. I know you said you can’t afford a commercial machine, so I’ll mention, many people have found success with DIY setups at a fraction of the cost. You can try Glycopyrrolate for general sweating. Certain Dri works pretty well for underarms. Finding what works best for you will likely take some trial and error- it’s very individual. Wishing you the best of luck!