If you want to reduce your nicotine consommation hop on nicotine pouches and gums and completely quit vaping. Then progressively diminish your consommation of those until you're not addicted, usually it will take you several months if you're addicted. Cocaine is about one of the worst things you can put in your body, if you're snorting it you can erode your cartilage in the long term and increase the risks of kidney and heart failure, and that's without counting the diminishment of cognitive abilities. Weed consumed everyday fucks up your dopamine receptors and also diminishes your cognitive abilities. For cocaine, the best is to stop this lifestyle and go get professional medical help. For weed, I'll admit I'm a bit guilty since I get high once every 2 weeks or so, so just lessen your consommation.