The universe could just as well be made of only one type of matter. The fact that certain particles attract each other is miraculous in and of itself. It's what facilitates complex matter and ultimately life. It's also a funamental law upon which brains have evolved. It's everything but absurd.
It's only been legal here for a year but before that I used to ask shady looking people at train stations or in parks. Those usually sell hard drugs but they can still be of help. It's a clichee but it's genuinely reliable. But like probably don't do this. Easy way to get scammed or mugged for a kid.
And I've been high on weed plenty around my parents. As a teen I generally didn't have much of an interest talking to them so they probably didn't suspect anything when I fucked off straight to my room after walking the dog. Would not recommend that for the first time though. Best to do it at a friend's house.