It is possible to be an individualist within a collective. You just put everybody on ignore and live your life. That generally works.
You can't ignore the rules of the road you are expected to obey if you want to continue driving.
You can't ignore the criminals who the Dems have let into the country across open borders (something lots of libertarians support).
You can't ignore building codes or your neighbors if you want to do something with your property that is against code or is considered a nuisance, e.g. flying a large American flag.
Also, two or more people living and working together isn't always a "collective". In most cases it is something called a "community".