Unfortunately, your system falls significantly short of the minimum system requirements and I’m not sure whether it would be possible to run the game on your computer as a result. While it appears you have enough RAM, neither your CPU nor your video card are supported.
https://support.lastepochgame.com/article/83-system-requirements
Our QA Lead tests the Linux client on Ubuntu, and on a different system I play the game on both Manjaro and Ubuntu. I also know several community members who play Last Epoch on Linux, including a wiki contributor who plays the game on Linux Mint.
I’m unaware of any issues with our Linux client when it is run on both supported hardware and our officially supported distribution, but I cannot guarantee it will run on other configurations.
If you do not have access to a computer which meets our system requirements, you may wish to consider requesting a refund either from us or Valve, depending on whether you purchased the game through us or Steam. I don’t have access to that information, as it does not appear that you are posting from the account on which you’ve purchased the game.