I want to see my past run on doom (unity) but I can't see it, it was 00:12:91.

It's not edited, I submitted another one

Go your your user profile, above your list of runs you can toggle on obsolete runs.

@Komrade it's not available in level runs

https://www.speedrun.com/doom_unity/run/zn13373m

In the future, go to the appropriate leaderboard on the game's page, select Filter -> Obsoleted Runs -> Shown and look for your run.