I've had some success with using it for stress and anxiety. Strains high in CBD are often rec'd for this. CBD is one of the more powerful and medicinal of the many cannabinoids found in the plant. THC is another well known one. CBD is usually not psychoactive or only slightly. THC is psychoactive

There is a particular strain called "ACDC" that I have used for this, which has a ratio that is low THC/high CBD. And so there is no real "high" at least for me.

You can vaporize instead of smoking it. Better for the lungs and in general apparently. If you go this route, it's important to find a good local collective or club with products that have been tested for mold, pesticides, etc. A good place will also give advice on what strains are good for what conditions.

Depression would require potentially different strains or products.

ANother option is CBD oil, which is an extract and no a whole plant product. THere is also FECO, which is an extract of the whole plant.

Lot of info out there, lot of it confusing. Takes time to learn. Maybe find a FB group where u can ask questions.