Improvement

Currently Plat 1 and I'm ass
Is there any guides/tip y'all recommend for the next Act?
Flex player (usually smokes or kj) - not confident on 1v1s. Prob the best thing about me is that in some 3v1 retakes I become hiko all of a sudden.

Get confident in 1v1 then lock duelist and win matches

on a serious note, https://www.youtube.com/watch?v=LFyLTpUyxI8 has some pretty good general tips.

you're plat, you can't flex for shit so don't try to flex. just stick to one role and play that. if you want to flex, stick to one agent per map

learn to use the minimap you can give good info to your teammates and they will be less useless if they are hardstuck.

Improve your movement and aim then you can get at least Ascendant - Immortal with no issues. You don't have to be extremely intelligent to get to these elos, although a lot of people do get there by being intelligent, improving aim and movement is the best way to start ranking up.

Do some aim labs/kovaak/the range training with some DM/TDM for about 30 min per day, then go to ranked. You'll notice some serious improvements 2 weeks later probably, but do not stop having these training sessions even after geting the elo you want. Consistency is the key to rank up faster.

1 - Play Jett/Reyna/Chamber

2 - Buy Operator

3 - Play aggresively, always going for the first duel of the round, trying to get the first kill, in plat they will just dry peek you in the start of the round, after you get the kill you just dash away or dismiss to safety to play with your team.

4 - Change positions every 1/2 rounds to not make it obvious where you are on the map

5 - Repeat

Congratulations! After following this 5 steps and abusing this shit broken gun you are now atleast Diamond!

Deathmatch is prob the easiest way to improve and focus on tapping/bursting instead of spraying every gunfight and you'll easily improve your aim and movement

Use the judge more