This topic doesn't belong to the main forums so simply stop here. It's a matter for the source community not of the overall one. Message/Contact the Mods/community on Twitter, Twitch, Discord or their forum.

But, can i make second post on forum? Or i must contact community on twitter etc.? I know that someone can think that i am weird but i care about this. :(

You can make posts in HL specific forums, but cluttering the main forums with topics like this when none of us here have experience in Half Life speedrunning is not the way to go

I get that you're passionate about this I'm sorry that I can't provide anymore help, but just making more and more posts here in the main forum won't accomplish anything and will just annoy people.

You can close this topic because some guys say (days ago) on sourceruns forum say that in singleplayer is different movement than in multiplayer.

Here is one of them reply: "Multiplayer Half-Life movement is a lot different from Single-Player, you can't gauss boost vertically like that (you can with the self-gauss trick), and you need to jump and crouch for most boosts to work."

(link for forum: https://forums.sourceruns.org/index.php?topic=3042)

Thanks for help guys! Greetings!