Just asking

Has anyone(thats struggles with depression to be specific) ever feel like a wave of sadness just out of nowhere?
Like you're just watching a video or hanging out doing anything, and out of nowhere you feel like crying, or your chest feels heavy???
I've just been struggling with my depression and I don't get why, I'm eating properly, and go to bed in a reasonable hour, I journal and stuff, and take care of myself
How do you guys deal when u feel like that and u start having this passive suicidal ideation
Thi is so dumb :
Also don't tell me to go get therapy, I am