I generally find it to be pretty rare for a game to be entierly lost by rng. Sure it happens sometimes, but usually there are at least some options available to handle bad luck, either by changing strategies part way through to whatever is available or by making unorthodox itemization choices to make the most of what you have.
Item rng is also already getting cut down substatially on the pbe, which will help remove what I feel is the main factor in games lost by rng, ie the ones where literally no items deop ever.
There are also some builds that have less dependence on getting 3 stars then others, which can help make things more consistent. My favorite build is wild shapeshifter dragon, which Lets me win fairly often despite rarely getting any three stars, as they just aren’t needed for the build to work.
Its also important to recognize that getting first should only happen 1/8th of the time, and is not required for the system to count a game as a win. 4th place or greater is all it takes, and that helps ensure that a game is not truly lost by one or two people getting exactly what they need.