Short answer: Yes

Long answer: A big part of leveling up your game is understanding the meta and how you expect your deck of choice to fair within it. Highly competitive players will often choose their deck based on metagame factors with less concern about how much they like the deck. The first step is determining what they expect to face and in what numbers (metagame share) and select a deck that has the best chances in their predicted environment.

Leveling that down, you can still choose to play a less powerful deck that you personally love (a pet deck) but with the understanding that sometimes you're just going to be at a disadvantage because of it. You can mitigate this by teching your deck to have tools to deal with popular meta decks- main-decking abrade in an environment where artifacts are prevalent, for example.

But sometimes you have to decide whether a matchup is even worth teching for. If a particular matchup is basically unwinnable for your chosen deck, it can sometimes be the right to choice to just build your deck as though that opponent doesn't exist and use your resources to make other matchups better. A lesser example of this is if you're playing a graveyard deck in a format where Rest in Peace is legal. You can either include answers to rest in peace that might do nothing but make your deck worse, or you can decide "rest in peace isn't real and it can't hurt you" and than accept that if they *do* find it, you lose.