When I post a longer run than the previous, it shows in second place, it should be in first

It appears you're talking about this leaderboard.

You'll have to contact that leaderboard's moderators (you can join the Discord server on the left) and tell them to fix this. They'll have to select the "Timer asc." option in the category, but since they're using a subcategory, they may have to create a new Full-game category with all Longest Game runs.