I recently had a look at the Guides section of the game page and I was wondering how it would be possible to have a post be put here. I'm mainly interested as I was considering writing up a in depth guide to Speedrunning the game which mentions things the current guides do not cover. Or would it be best to get into contact with the makers of the current guides to update and edit them?

just click on the 3 dots next to guide and click add guide

well you need to have a verified run on the leaderboard in order to make a guide, and looking at your profile, it seems you don't have any runs verified

I have today submitted a run and it will take awhile for it to be verified. Kinda wanted to be a perfectionist and wanted to make my first run an alright one I have a lot of room to improve but I think I have a decent bit of knowledge from myself and other runners who i've talked to thank you for letting me know though.