I am scared of dating, idk how do i go ahead?

I, 25 F have never been in a relationship before. Past was for various reasons like focus on my career, confidence issues, lack of friends, lack of socialisation opportunities,etc.

But I still have no boyfriend, nor an ex. Most of my friends have, have dated, or atleast have some experience.

I am happy being single most of the times. I do feel like I want to date, but I know no one who is dateable. My friends keep telling me to try my luck. But its genuinely scary out there. What if I try to open up with a crap guy?

I have a shit ton of past trauma. Not sexual abuse, but basically everything else and I am not completely safe even now. Like my body freezes at the thought of physical closeness. I have been backstabbed a lot too. I know my faults and have been in therapy for 3 yrs. She also says to broaden my horizon a little. I even have a long distance co-worker(/friend but more formal setting) that I have a crush on.

But I am so scared. Like, there are so many what ifs. So many ways everything can go wrong. My brain is so hard wired for trauma that good conversations feel scary too. So, I am worried if I do start dating someone, i will end up with a red flag and destroy my own mental well being & hard earned life. I am so scared and don’t know who or what to trust. Just imagining a happy life feels scary. But I am so lonely. Everyone I know has had experience with relationships and they keep talking about it making me feel even more unrelatable. None of my trauma is with proof, so people around me don’t understand.