newcomer needs help figuring out his mistakes :D

hey guys! i am new to the game. i got myself a vegeta deck and i try to get better at it. this game i think i played as good as i can ^^ what things ami doing wrong? like i am never sure what cards to charge with etc. i am happy about every suggestion 9f2e65ec-70dc-4a22-acf0-eba049014184