Your wrist is a fulcrum whose main purpose is to let the energy of your arm pass through the wrist, through the fingers and into the keys. Much like if your alignment is off while walking. If your knee or ankle is not properly aligned and you misstep, all your weight will stop in the joint that is not aligned thus, we sprain our knees or ankles. Instead of our weight going into the ground, it goes into the joint that is misaligned. Like electricity passing from point A to point B. All is fine unless you get in its way and disrupt its path by touching the wire it is traveling on.
Wrists can take on various flexion shapes and those are okay as long as the shaping is a result of the arm and not originating in the wrist. Does that make sense? Like, if you hold your arm out, gravity will naturally flex your wrist. YOU are not flexing it, gravity is. When playing, the various shapes of the arm and elbow will shape your wrist, you will not. I beleive this is the foundation of the Russian style of playing (I'm Polish). There is a video called "Freeing the Caged Bird" where the author uses floor exercise to teach gravitational alignment of the fingers and wrist. They may be on Youtube.
Two shapes you never want to do are ulnar and radial deviation, that is twisting your wrist left or right to grab a key. Remember, the arm places the finger, the finger and wrist don't contort to reach a key. The second is extending your wrist (dorsiflexion or bending it up). This can happen if you sit too low.
To find your proper bench height, adjust your stool so that the bottom of your forearm is a little bit higher than the keys so that you can rest up. If you sit too high you may slouch or slump resulting in hyperextension of your wrists. If you sit too low you may raise your shoulders to make your wrists higher. An improper bench height will literally give you a pain in the neck, or back, or wrists. It will definitely affect even playing.
Go write on a chalk board, gently wash a window of wipe down a table, gently. Notice that it is your shoulder, elbow and arm doing all the work. Your wrist, hands and fingers just go where they are needed and your moving arm places them. That is how you should approach piano playing. The fingers don't drag the arm behind them. If you play from any of your fulcrums, which include the fingers and each phalanx, that is where your gravitational energy will stop, where there is a break.
If you misstep while walking and all your gravitational energy goes into your ankle and not the floor, you sprain your ankle. At the piano, the damage is often cumulative and insidious. We often ignore tension thinking that we need more practice, strength, endurance or exercises. In actuality, we need adjustments to our alignments. Some teachers don't know this and they just tell you to practice more resulting in cumulative damage, poor technique or the illusion that you have no talent.
If you don't have tension, try this. With your arm at a right angle in front of your chest, with all five fingers relaxed and together, thumb facing upward, rotate your forearm from your elbow as if you were playing a slow tremolo (like turning a screwdriver or turning a doorknob). The rotation or left/right movement comes from your pronator and supinator muscles surrounding your elbow. The wrist nor fingers should move by themselves, it is the elbow which is moving them. If you already hardwired tension into your fingers and wrist (really your brain), you will have to eradicate it. Rotation should be effortless and the P&S muscles are indefatigable. Unlike your flexors which are designed for gripping, not speed. Also, if there is the slightest ulnar or radial deviation, your wrist will bear the brunt of the rotational force instead of it dissipating into the air. That ain't good.
Of course, when you then move your arm to the keys and static load pronation on the keyboard, you will feel tension unless you've already acclimated to it or have brow beaten it into submission with silly exercises. There are ways around static loading pronated tension but you should work on these with a teacher who hopefully knows anatomy and physics.
Piano playing isn't some mystical hocus pocus thing called talent. It is mechanical and everything that moves must obey the laws of physics. Pianists are not exempt. Ignore those laws of ergonomics and there will be a price to pay. I should probably close with something diabolical such as "Bwahahahahaha..."
But seriously, find a teacher who knows the basic Newtonian laws. Physics isn't just a class in HS that you don't use in the real world. You use physics with every move you make.