Sex is legit impossible w my gf.

so I'm(18) kinda big but not particularly thick (7" nbp by 5.5") and sex with my gf(19) is litterally impossible it's like she has a micro vagina (ik women come in all shapes and sizes too dw) .

Normally, with another partner, this wouldn't have been a problem since we would've been sexually active in another manner (bjs/going down on her etc) but she is a virgin and idk how to approach these alternatives since all my previous partners were equally/ more experienced than me.

She has told me that she finds it kind of intimidating (supposedly in a good way) and all we have been doing is hand stuff but she is frankly trash at hand jobs (still love her with every "inch" of my body tho).

Leaving is no option and i'm 99% sure it is not her hymen (i've done my research this place is my last resort). dont tell me about stress since i've let her initiate every time and made sure to make her understand that no sex is fine for me as long as she's happy. dont tell me about lubricant either i'm not a moron i've even tried 2 different kinds.