I have tried to become a Vampire on several occasions, I tried it early on and died in one hit. I tried it later and I couldn't find any. When I randomly found one later in the game after hours of it pounding on me and me reloading I didn't catch the disease. Is there any tips to become a Vampire in daggerfall? And is there anything I should go before/after becoming a Vampire?

One thing to keep in mind, and I think this is true, you lose all your other guild affiliations when you turn into a vampire (since you 'died' after all). But I can't remember if they was just supposed to be the way it was but doesn't happen, or if it really does.

But as far as it being hard to contract vampirism, I think it's like a 0.6% chance per hit, so it may take a while. If you have a good heal spell, just let them hit you and keep healing. Rinse and repeat for a while.