How to increase team chemistry in NBA 2K21 MyCareer?
Focus training on chemistry. Keep your team together, or at least your main core. It’ll come over time. Keep the same players together. It is easier to cooperate well with similar players.
Setting your training to work on Team Chemistry (best for older players) One of the negative influences to chemistry is having a problematic player who is very unhappy. If some players are pissed off at you for they don’t get enough time, it would be better to take the temporary chemistry hit to trade him for an older benchwarmer. In other words, you can choose the veteran players to participate in the training, and then the loss will be recouped in soon.
There are GM Upgrades that help Team Chemistry. Other than that, your players are supposed to try your best to keep your guys happy (trades always decrease chemistry), and if your team is winning, your chemistry will rise.
Try to always get that A+ teammate grade and choose the ‘nice’ answer in interviews.
For example, if in one of the post-game interviews they ask for comment regarding how many points you got, tell them you couldn’t have done it without your team.
That’s what builds team chemistry the most IIRC. In addition, pick and roll every play and feed the open man. Make smart passes and limit turnovers, defensive breakdowns, fouls, etc.