engine error, pak file

Product: Apex Legends
Platform:PC
Please specify your platform model. PC
AMD or Nvidia Model Number AMD
Enter RAM memory size in GB 16
What is your gamertag/PSN ID/EA Account name? OMEGAVSTHEWRLD
Please provide your squad mates' gamertag/PSN ID/EA Account name if possible.
Are you using any software with an overlay? No
Which Legend were you playing (if applicable)? i cant even open the game
Which Legends were your squad mates using (if applicable)? refer to previous question
Where did the issue occur? In the lobby (waiting area before the match)
Which part of the map or menu were you in? If you don't remember the exact name, please describe the area or what you were trying to do in the menu. none of these, i cant even get into the actual game
What were you doing when the issue occurred? E.g. respawning a squad mate at a beacon, using an ability, a squad mate left the game. i was trying to open the game and change my settings but before i could it kicked me out of the game and showed me the error
Did your squad mates also experience the issue? No
How many matches had you played in a row before the issue occurred? ZERO
When did this happen? (dd.mm.yy hh:mm) it started today
How often does the bug occur? Every time (100%)
How severe is your issue? Major impacts to gameplay
What happens when the bug occurs? when i try to open the gam it seems normal at first, but after a couple of seconds the game forces me out and shows me the error, i can alt tab back into the game but cant click anything
What should be happening instead? it should not be showing me that error and letting me play the game
Steps: How can we find the bug ourselves? idk man if u got discord then we can try and work something out there: ASTRO#1731

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to start from the top, im sorta new to zpex, i started playing when it first came our but couldnt get into it, when i tried to reinstall it and open it i got "error reading pak file", i tried to reinstall 4 times and nothing, im still getting issuses (I USE THE STEAM VERISON OF APEX) i use the steam verison of apex because of ANOTHER bug i have with the origin downloader that i keep getting called "20:99" (i just wanna play apex man)