if i watch 18+ content do i need to follow all that monk level of sincerity to clear the karma or i can do the layperson level one of reptance as a layperson strictest answercan i jsut folly the layperson repetense rules to remove the burden or i need sti
No. As a layperson, you do not need monk-level vows, but you must do honest and sincere pratikraman / repentance properly.
For complete karmic purification, monk-level discipline is stronger, but you should follow the layperson level sincerely, not casually.