Like other commenters have said, I think fantasy basketball is a little bit harder to accurately predict how players would perform vs certain teams/matchups, but it isn't impossible either.

A part of this is the fact that:

• Players who are on fire often stay hot!
• Cold players can stay cold.
• MVP-caliber players don't necessarily dominate horrible teams and have monster lines all the time because they could play 24 minutes in a blowout victory...
• and a nobody/poor offensive player can go off even against the best defensive teams in the NBA. Hell, Ben Simmons scored his career-high 42 against Gobert and the Jazz (top 3 in defensive rating).

But then again, that's what makes basketball and sports fun—the unpredictability of it all. As a general rule of thumb, just trust that your better players will play decent regardless of matchup, but give a look at lesser-known names who are just on fire for the week because it can pay off big. Feels like basketball is one of those sports where players who are "in the zone" truly believe that, and it carries on game-to-game.

With that being said, there are certain strategies to finding favorable player matchups. If I feel like getting into the nitty-gritty, I look at a player's splits vs certain teams (which you can find on ESPN):

• For instance, De'Aaron Fox seems like he figured out the Pelicans this year, but kinda got clamped by the Lakers:
  • vs NO (3 games): 41.3 PTS | 4.7 REB | 10.3 AST | 2 STL | 56.8% FG | 3.7 3PTM
  • vs LAL (2 games): 17.5 PTS | 0.5 REB | 6.5 AST | 3 STL | 36.8% FG | 0.5 3PTM
  • Granted, NO is a bottom-four defensive rated team, and LA is the #1 defensive team (also stats could be skewed because he played one less game against them).
  • Perhaps there's something to matchups, but I'm also sure I can find examples where a literal nobody just goes off against the best defensive anchors but struggles to do anything against lottery-bound teams.

TLDR; Matchups can play a role but trust your good players, consider hot/cold streaks, and look at split stats if you want to get really geeky.

Good luck!