Supplements are generally a waste of money if your diet is good. The human body was optimized in evolutionary time to thrive on a simple diet of real foods, not factory/chemical plant-made, sugar-laden, ‘vegetable’ oil doused junk.
If your diet is not good, or hasn’t been for some time prior, then careful supplementing can be of benefit, but it usually is expensive. Consider that when you take a pill or powder from a bottle, you aren’t getting the full and complete array of nutrients that are present in something like fish, venison, pasture-finished beef or mutton, foods like that. Those kinds of foods are where you should be looking for your ‘supplements’. You get the whole package with real foods.