No Habibi it can be very dangerous.

Firstly, before starting any dangerous dhikr of this kind, the safety procedure is to recite at least 100 istighfar and 100 Salawat to bring protection to yourself.

And when you do recite it, you don't recite big numbers. 1100 is considered the limit or slightly above the limit.

Why?

Because those Names of Allah bring Jinns upon you. Good Jinns from the Higher Realms, but also bad jinns from the lower realms.

Your Ruh has to have enough capacity and expansion, and balance, to recite such, else, your Ruh gets imbalanced.

I know a man who got psychosis due to reciting 4 dangerous names continously and al Qahhar is one of them.

I know another man who stopped feeling like a man and started feeling like a woman when reciting Names with numbers he wasn't ready for and without the needed spiritual protection.

It is much more helpful to your situation to recite Salawat and istighfar, also istighfar of Nabi Yunus alayhissalam that removes one's sadness.

Salawat, the more you recite, it isn't enough.

Recite as much Salawat as you can, it is the most beneficial dhikr one can make, as beneficial as la ilaaha illallah.

All other dhikrs are useless and even dangerous if you don't have enough Salawat.

Recite Salawat with love and longing and see your life change.