If you are dedicated to your CS2 journey, you probably want only the best results for yourself, and that includes things that might help you bring the best out of your gaming talents. Graphic settings can have a huge impact on your game and setting them as pros do may have even bigger consequences to your game.
There are several different factors included when we talk about the graphic settings - brightness, aspect ratio, color mode, resolution, display mode, laptop power savings, global shadow quality, and many others... However, you don't have to get overwhelmed by such a huge variety of settings options or different opinions and comments you see on the internet. You should adjust your settings in a way that makes you feel comfortable while you play and allows you to be the best player you can be.
A good image is worth 1000 words, so when it comes to brightness, stick with what gives you the best vision of the map that you want. There are no strict rules or guidelines here, so you are free to choose at will. The same goes for the color mode and the resolution. But, the aspect ratio is a bit different, and it can mean the difference between having a good or bad CS2 experience.
There is a really high percentage of pro players who use a 4:3 ratio. Despite being an individual thing for lots of people, there is a consensus when it comes to agreeing that certain aspect ratio combinations are better than the others. Also, playing with a 4:3 ratio allows you to choose between different scaling modes you couldn't pick otherwise - like black bars, or stretched.
Whether you're using 4:3, 16:9, 16:10 it is important that you enjoy while playing the match with your team. or They all have their pros and cons, but the ultimate indicator that you've chosen the best one for you is that you have lowered your framerate as much as you possibly could, without compromising the aesthetics of your monitor image and the game itself.