Um .. toy won’t go all the way in

So ladies, I just used my first real dildo last night in preparation for actually losing my virginity this month I think. I used new water based lube and tried a few different positions without much difference. Admittedly it was 8 inches and I know the vaginal cavity is up to 6 inches long which is about how far I could get. However I wanted to try because my guy is probably 7 inches and thick and we’ve both discussed that balls deep is appealing. I know that lots of people have partners that are bigger just from chatter on this app. Could this get better with becoming sexually active? I don’t want it to hurt. He’s fingered me and used my smaller toy on me before which definitely weren’t bigger than 6 inches.