Liverpool have younger players than Real Madrid and has experience in the UEFA Champion's League final, this is a big plus for them going into the finals. I think Real Madrid's defense is not strong at all and the Mane and Salah will run riot at them. Real Madrid will have to depend on their old but effective players like Modric and the miraculous Karim Benzema to get the job done.
I think it's still not possible to happen especially when Madrid are ready in midfield.
For defense, indeed they are nothing special there but on the other hand when looking at their midfield movement I think they can still turn things around with this not to mention the movement of Vini and Benzema up front which has even made three big clubs like City, PSG and Chelsea so hard.