Seconding that being too young when you first got her, and her not being spayed yet are likely reasons shes not comfortable around you. Neither of which is your fault, but might set bonding with her back some compared to other buns.
My Bombur was 2 months when we first got him (the breeder lied; the breeder did get in trouble) so I had to hand feed him until I could wean him. It didnt help he also had genetic tummy problems we didnt know about until later. It took over a year to build his trust. Even now, two years later, his trust still varies. I think some bunnies are also just less likely to trust people, even if you do everything right.
After she is spayed, you can try to build trust by showing her you are completely nonthreatening. Lay on the floor while she is out running around. Dont reach for her. Just talk to her. If youre a solid sleeper (dont move around while asleep), take a little nap on the floor with her. This will show her that you are not a threat to her. As she gets used to having you around, you can start hand feeding her pellets and greens while you lay around the floor. This will show her that you provide treats. As she gets more comfortable around you and your hands, you can start trying to pet her when she comes near you. Dont reach for her every time, maybe only reach for her 1/4th of the times she comes near you. If she runs away and thumps, stop reaching for her for an hour or few. When you are able to pet her, only pet her two or three times, then set your hand down. While youre on the floor on any of these steps, allow her to climb on you and sniff you. With patience, she will learn to trust you
Just to note, it can take anywhere from two to six months for a female bun to drain her hormones fully after shes been spayed. She might still act out hormonally once in a while as her hormone levels shift in her body.