Will it get better? we don't know
Will you improve? yes
Will pvp remain frustrating to you throughout your experiences? likely
Will frustrations grow if you improve and the game performance doesn't improve along with you? probably
point of this being do what you love, what interests you, what is rewarding to you. Pvp in this game is often frustrating whether you are inexperienced or highly experienced.
Personally I recommend focusing on naval, defense, ladder guarding. Also frustrating but less frustrating than close combat.
The reality of pvp in this game is you cannot attach your happiness to outcome or game performance. Sometimes it's alright and sometimes it's not, it's going to be frustrating and it gets more frustrating as you fight against the game rather than embracing the parts you enjoy.
Become the most skilled pvper on the seas if that matters to you but do it because you love it, investing in outcome will only burn you out and keep you frustrated.
or work around the frustrating parts of pvp as you gain overall experience and have a good time.
There is no universal right or wrong answer other than do what you love to do in this game, invest in that, wherever it leads you.