when i use optifabric with tweakeroo and i activatet the freecam, my player fall down and i can pass trought walls with this glitch

This was fixed some time ago, update your Tweakeroo to the latest version.

What do you mean by "latest release" exactly?

It does not happen in my test world with these versions:

• OptiFabric 1.9.6
• Optifine 1.16.5 HD U G7
• Tweakeroo 2021-03-16 (should be no changes to that code since 2021-03-03)

its happening with the latest release

huh, false alarm
i guess i deleted the wrong version when i was updating or something, not having that problem anymore after reinstalling the mod
sorry about that