actual smart people come

If getting first kill matters so much in pro play.

why dont teams just play reyna and focus on getting first kill.

Because after the first kill Reyna becomes useless so it's basically a 4v4

Because Reyna ability kit doesn't help the team at all,in High level every utility counts
Reyna Eye is just trash

because jett can do the same thing and still be useful

i came 🗿

reyna's kit is really bad her escape is the only thing good.For heal you need los which makes you unable for multi kill and her flash is bs you cant clear space corners with reyna as you can do with raze and cant smoke and dash and create distraction like jett.She is selfish agent who is no use for your team

because even 5 yay on a team cant win a series

How is she gonna help you get that first kill? her eye is hella weak compared to normal flashes, she doesn't have Nade, smokes(wall like neon or phoenix), or molly and if things go wrong, she can't get away with a dash. Her power comes after you get the first kill(healing back up, or repositioning), not before. Teams may prefer avoiding the risk and uselessness of Reyna for more utility like neon or raze, or just opt for jett that can go aggressive and get away if she doesn't hit the shot. There is also ults, in pro play, is very difficult to multi-frag, Neon and Jett ult can help you on ecos, and raze's ult can almost guarantee you a kill.
But to me the main thing is movement abilities, those can help the team so much in entering the site and also bring verticality and explosiveness to the game in both attack or defense.

it about to defence the site
kill didn't matter

In ranked game people dont peek to destroy reyna eye the hide like pussies and enemy team takes up space but in pro play they can easily double peek and destroy eye which basically renders reynas 1 util useless and her escape or heal is kinda good but noone really fights in isolation (in pro play) so using that orb is hard i feel

She provides little to none space creation which is important when taking sites.
Her kit isn't actual good for getting a first kill as half of her kit doesn't work until she gets a kill.

Reyna doesn't help you get the first kill. Her util is one of the worst flashes in the game and a a bunch on things that don't matter unless she gets a kill. Jett, Raze, Neon etc all have movement abilities that help them take space more effectively positioning themselves into better odd fights. Reyna has a bad flash that can be broken in like 3 shots. Pheonix and Yoru have much greater potential than Reyna because they have better flashes and other useful util, Pheonix has the best ult in the game, Yoru has a lot of suprise factor.

・Jett/Chamber can do the same thing with more vertical mobilities which creates more unpredictable angles
・Jett/Chamber can use their ability before getting a kill,
which enables them to tank the enemys' util

You have a misconception about reyna, she doesn't help with getting the first kills, all of her skills lead her into getting the subsequent kills easier, heal is obvious, dismiss allows you to escape being traded, ult basically just buffs dismiss and heal, while leer is the only ability that actually helps with getting the first kill, and it really doesn't help when theres more than one person there, because one of the guys can just shoot it while its forming and the other will kill you 90% of the time, and even after the 10% you get the kill and dismiss out, what are you doing after? you prob just recieved damage peeking into 2 guys and now you are low and leer isn't really a good ability, in a ranked game of course you can just peek again and try to win the other fight and heal but in pro play you are not repeeking that angle as they are already prob gone and played retake.

She doesn't provide anything for the team. Like Jett has Smoke and Dash to like either escape or create potential entry spots. Raze helps in clearing sites using her Roomba and Nade. Neon can use wall and stun and then run and slide. Reyna has none of that. She only has a flash which is kinda thrash as it is very easily breakable especially in pro games where they play as a team and can easily punish Reyna. Another thing is Reyna's abilities are unlocked only after she gets that first kill. If that goes wrong then Reyna is basically useless. And in a Pro game where each and every util matters you can't have a selfish agent like Reyna in the team as she provides nothing to the team. And yes she can escape only if she gets 1 kill and in a pro game no player would offer an easy kill to the Reyna so yeah she is basically useless in pro play

because reyna is too busty , so the teams gets distracted