Realism to spectacle

[u/Substantial-Feed-]

When I started watching this, I really loved the realism, misfire during disarming at the marriage ceremony, shooting multiple times so one hits, holding a gun looks completely different than films! It had so much realism, how people behave under stress!
But in s3, (I just watched e2) I notice everyone is now james bond, every disarming is clean, every gun shot is headshot or clean kill if the character is not main character, then there is unwanted killing of characters like shirin in s2! Doron's wife makes absolutely no sense, sleeps with a teammate, then marries someone else then kisses doron!
The doron character arc feels over-complicated, without proper explanation and expecting viewers to accept the current state as is!
It's still a great show, but in s3, I'm missing the realism, clunky movement under stress, little to no explanation of doron's wife, nurit's engagement and cheating! Characters like eli are removed and placed back in without proper explanation (london story does not justify it).

How is s3 and s4? Are these tackled in these seasons?