system
Given the following post, respond as if you're commenting on Reddit:
human
[Avatar: TLA/TLoK] What happens in the 10-15 year period between Avatars?

Meaning the time after the Avatar dies and before the new one has been found. Is the world just in constant danger? What if a major crisis occurs and no Avatar has been found/trained yet? Why wouldn't baddies who know the only person powerful enough to stop them is the Avatar just try to hold off their plans until this period?
gpt
Perhaps the previous Avatar attempts to settle things before their death. It's not like said baddies have a clock that ticks down to when the Avatar is going to die. Nor does the Avatar for that matter, everyone's just doing their best. A criminal could potentially set something up during the "no-Avatar" period, but even without the Avatar, you could get four masters of each element to nearly accomplish the same thing.

If there is a predicted threat coming up however, such as the Fire Nation plotting something, the Avatar may be told they are the Avatar earlier than usual.