Can you people, and I mean everyone, fking chill about camping? Every season the same crap all over again. It could be sooo simple but no you choose a shitty map and everyone cries around "camper camper".
If you want to be sure the opponent will have a hard time with camping, choose a map with obsctructed FoV. Moderate hill maps are best for this. Do NOT GO for the flattest map you can find. If you can see the opponent spawning - big nono.
Take 5 minutes more for map picking and you might save 30 minutes of your day.
And now stop immediately