How to let go of your inner anger

Hey guys

So I had a gf and we loved each other but as I was not financially independent at that time I asked her to wait . But this is india so she said she can't do anything against the family and blocked me . A month after that one of our mutual friend send me a video of her marriage . Now I get that practically I was not ready to get married but I just can't let go of this anger . It's been almost a year and life is on a wrong trajectory since then and my each failure feels like a taunt that her attitude towards me was right and I don't deserve anything. Please refrain from commenting about her. And give me some tips to let go of this anger and frustration.

I have tried regular exercises and a bit of meditation. I can't afford therapist and I know time heals all the wound . So if you have any other suggestions or comment please do share.

P.s - we were in mid 20s both of us .