Recommended to have minimum 4gb Ram to be somewhat able to play.
The pink is because of your graphic card either not updated, or not supported for the game.
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You can always just buy more/better RAM cards - cheaper than buying a whole new PC if yours works well enough for everything else you do. If you're on a laptop I'm fairly certain you can do the same, but you need to keep an eye out for the particular RAM cards that laptops use, as they're different from a desktop PC. If it's your graphics card that's the issue, then yeah, honestly it's better to just buy a higher-spec pre-built than try to upgrade a badly-outdated rig.