Anticheat not loading

I noticed when i launch the game. the blue bar indicating that anti cheat is loading only loads for 1/8 of the bar then dissappears without that quick second of loading the rest of the bar fast. in game i notice i can only play for about 30 seconds until anti cheat isnt established and im kicked out. ive loaded anti cheat myself and repaired it a few times. ive validated the integrity of the files under properties on steam. im on Ubuntu. why is this happening?

I have the same exact problem but i dont know what to do. also on ubuntu

GNU/Linux does not meet minimum requirements as per Steam Store page, only Windows is supported platform.