Got cheated 2 times 😂

Hello guys am(24M) gonna ask you guys what am i lacking by the end of story

First story , i had a gf(26F) in my clg 2nd yr(2022) which lasted for almost 2yrs , then she remained unplaced at her home & started dating someone else who was her mutual friend . I did lots of hardwork from proposing her to fulfilling her every need . I had very bad reputation at my uni for my behavior towards others and was in police cell over 2 time . Then also i tried to improve myself , cause she was soo attractive and i wanted her for my whole life.

Second story , moving forward after 6 months (Sept 2024) i was bit depressed , but i onboarded on my job , so made new friends , new city and everything. I was trying to recover . Then i meet a girl (23F) in my office we had same training schedule, somehow our interests matched , we talked with each other a lot , sharing everything with each other , she was more on the possessive side even when we were friend , again i proposed her she agreed and was enjoying evey day of my life , but after 8 months her location changed , i was suprised too . Later i found out she was staying by her so called male best friend (live in relationship) , i was shattered like anything, i loved her all by my heart, i begged her to not to do such , but she declared me psychopath and said i tried to use her (for what??) And dumped me.

TL;DR: I have got traumatized from my past , Currently i have barely recovered , even if someone approaches me to talk beside work i get anxiety attack and past reel starts playing. So tell me am what to do in such situation ?? Hoping for good advices. (Kindly ignore grammatical error)