Sure, but one person not eating beef doesn’t have a direct impact on beef farming.
In the same way that one person voting makes no difference, but people do it anyway. You are taking an extremely nihilistic and defeatist position that seems at odds with the effort you put into writing the reply.
And none of that is likely, so you may as well enjoy your cheeseburger.
At least if you cut down or give up eating them you can tell yourself that you are doing something to not actively making the planet worse for everyone. Is cutting down the amount of meat you eat really such an awful proposition? There are health benefits too.
There is also a massive difference in the CO2 produced for different types of meat - chicken produces 1/10th of the emissions of beef:

Source: https://ourworldindata.org/carbon-footprint-food-methane