Seriously how to repair?

[Yindiram The Faerie Dragon]

like what key to press? can't find any indicator, the tutorial sucks so bad

[Fearo]

Pick up the turret they pointed you to and just shoot it at damaged stuff.

[SirTimmy]

I picked it up and healed a wall but then shot a turret and it destroyed it lol This game is janky as hell

[ArmstrongDicksmasher]

Originally posted by Fearo:

Pick up the turret they pointed you to and just shoot it at damaged stuff.

this, its poorly explained but thats a gun that heals your friendly units/components and hurts the enemy.

[JamesTBG]

Originally posted by SirTimmy:

I picked it up and healed a wall but then shot a turret and it destroyed it lol This game is janky as hell

No testphase of a game is up to the average joe gamer.

[jerem]

incredible after several attempts and research impossible to find how to fix

[Kilburn Rush]

So there are a few ways to repair stuff. The most research intensive way and the most reliable is to get an advanced guardian factory. Then you can make support guardians which (once upgraded for some power) will have a repair turret that can be reloaded with ammo boxes. You can also remove it from the guardian and place it into a machine gun turret mount on your base. Sadly that only lasts for the tour tho before you have to do it again.
There are also XEN that can be found that will heal players or turrets for some ammo out of your gun. Lastly there is portable repair benches. these are consumables that you can use to repair stuff.
The healing mounted gun that you can find randomly or in some recovery stages is similar to the support guardian mounted gun and can be used the same way by you or mounted on something. Hope this helps :)