Shitty Work

Hi Everyone Tech stack is Java and SQL(dropwizard) been there for 1.5 years but still don't have much idea abt infrastructure of codebase.Have Developed Resources as API but Feels Insecure and Imposter.They've supported in my Sick Phase (Anxiety, Depressed phase) but Still feel lot Anxious bcuz of lack of knowledge (my mistake+colleagues bad behaviour resulting in low self esteem and facing lot of Self image issues bcuz of that.

I need Help but also feel pressurized to work till late.

Should I Leave(dont have much confidence left in myself and that place feels comfortable -(not that much mental effort for daily tasks)

I need Help for Mental Issues but I'm in New place and even my Hometown is not that much developed.

I feel very very lonely and Helpless Only good time is Gyming which gives some relief.

How should I Handle myself?