How can i endure falling back into depression while the traumas of the first one were not really healed?

The first one was me loosing confidence in myself because of money problems, first time in my life i felt i had difficulties in my studies, and many lies from people i thought were friends. All at the same time like a tidal wave you couldn't escape. It was horrible. Made me quit a big PHD and save face with the subject rework as a master thesis.

All the traumas were not healed and happens this shitty pandemic and this next chain of events. I just can't anymore.

My relation with my partner went toxic and as result we broke up on new year's eve, my career was really difficult to initiate because of all the lockdowns and made me loose again some confidence and happens the worst of all, a guy i trusted lied to me and gave me HIV.

It is really difficult right now. It seems like my mind is really going downhill...