Depression, the enemy of God, I know it very well, it used to control me, but praised be the Lord our God, He took me from that darkness to the light, no longer under depression's control, but still fighting against it, how small is my faith, how big is God's understanding and love.
I found that talking with other people helps too, no doubt depression is the evil one, always bringing all sorts of lies, desperately to take everything from us, but take heart, Jesus overcame the world, His powers are available to all of us, all we need is faith.
Thinking at how Jesus overcame temptations, I understand that I can act like Him when the evil one comes with all sorts of lies, with my voice or with my inner voice, I say: "Satan, leave me!"; and believe me, it works, no matter how overwhelmed I feel by the evil one's lies.Yes, it takes time, you have to believe, you have to fight against temptations from the moment they arrive.
I don't really know a whatsapp group, but you can find many of us here who battle depression and other similar things, I am always around, if anyone needs someone who understands, feel free to contact me too.
Never give up, stay strong in God, put all your faith in Jesus, take His life as the best example on anything you need, His apostles have the answers, God bless you!