Quit melee, become an archer.
Horse archer you mean?
Because being foot archer without ability to block reliably is a pain.
Well, I could skip the blocking part... Being foot archer is a pain.
On topic - if you're bad at blocking you might wanna get some practice on duel servers (both crpg and native), it's not a thing you can be taught, but duelling with someone who doesn't want to kill you in first 2 seconds might be fruitful.
Also I'd recommend you to play siege, battle mode might be a bit frustrating to play for newbies, and you get a lot more fights on siege since you respawn like every 30 seconds