Does having fears about the future make me a disbeliever?

Assalamu alaykum, I'll keep it short: if someone has fears about the future or struggles with anxious thoughts, does that make them a disbeliever? What I mean is not that I reject the future or deny Allah's provision - I believe Allah will provide for most of my life. But in certain areas, like mental health or psychological struggles (and mentioning marriage here is just to illustrate where I struggle, not to seek advice about it), I’ve been dealing with persistent low moods and sometimes slide into depressing thoughts. Afterwards I feel awful worried I’ve sinned by losing hope or faith. I understand mental health issues are part of our tests and happen for a reason, but I’ve been stuck in a dark place for a long time and sometimes can’t see a way out. I will seek professional help, inshaAllah, and I’m looking for a therapist. I remind myself that everything comes from Allah, life is a test, and rewards await the patient believers. Still, my heart and my mind don’t always agree - it’s not full disbelief, more like despair or overwhelming doubt at times, hard to explain. Edit: after rereading, maybe “doubt” isn’t the right word. An example: I sometimes think my life is ruined or beyond repair. Then I try to calm myself by remembering that Allah is in control, and that usually helps, but those thoughts keep coming back.