Prostate Massager

I bought a cock ring with a prostate massager on it. My question is how in the world do I get it inserted. Literally never had even a finger in there and I was just trying so hard with a ton of lube and it just won’t go, like not even an inch. Does it just take awhile to get the bhole to open? The thing is small too. I’m 42 so I’ve done anal with chicks many times and I have a newfound respect for all of them ladies now. Appreciate any insight.