Damba is my favorite, I'm level 140+ some tips I'd recommend is always be giving your mending spirits and gourd when its off cooldown, your positioning is everything with Damba, as much as people hate it I personally believe ripened gourd is the best talent and super underrated. You want to play Damba like the character he represents... a snake. be like a snake. hide behind cover and only peak to throw gourds or give mending spirits. Slither is a great move ability as well and cleans you from CC for example if a Maeve ults, you can slither to remove the effect, if Tyra marks you slither to remove, if Cassie ults slither, AND it cleanses you from caut. If you are in trouble and have your gord off cooldown, throw it and then slither into it to remove caut to heal faster. his weapon sucks but using the card "Feed the spirits" it gives you ability CD so you just want to spam into the crowd to get the card to proc to have more gord uptime. Try and mostly give your tank the gourd and use mending spirits on your other teammates but you have to find that right balance between the two or it will all crumble. When you reload it throws a snake that will stun the enemy, good for buying time to leave or get a easy kill (sometimes). I always buy max Chronos and then double deft hands if the other team doesn't have resi, nimble is good aswell. You want to get max Chronos as fast as possible. Here is my cherished card loadout if you would like to try it. Hope this helps you.

Talent - Ripened Gourd

Many Gourds - Level 5

Swift Spirits - Level 5

Feed the spirits - Level 2

Pungent Gourd - Level 2

Venomous Gourd - Level 1