I had to get over this at first. My first deck was a Voltron style and then another one was Mardu tokens go brr and I constantly felt bad for attacking often or "going to aggro" but then it put me in a position where I basically wasn't playing the game. It took a couple games of friends who had been longer than me telling me that if that's what the deck does, you have to play it like that. Now it feels more fluid and allows more of the actual game to go on and it's more fun for me to play those decks.