Possibly the worst game

Yes, You did play very poorly sorry to say, Luckily I know the Ruy lopez/spanish opening, so I'll try and help.
On the move 3. Bb5, that is the Ruy Lopez, and the most common move after that is 3. a6 for you. Nf6 can still be played too. But d5? was a blunder, of course showing that it loses to Nxe5. You should have done 4. Nxe4 at 3. Nf6, that was the Ruy lopez : Berlin defense. Rb8?? I would have done Bd7 maybe.
9. Nxe4 was a blunder, since of 10. Qe2 Basically it was lost by then anyways.