Stay secure, and always backup your data.
Before attempting a bypass, you need to understand what you are fighting. Introduced in 2018 (MacBook Pro, Air, and Mac mini), the T2 chip combines several controllers into one: macbook t2 bypass free upd
If you have a legitimate need to access a T2 MacBook that is locked, the following are the standard and safe procedures: Stay secure, and always backup your data
You usually cannot sign into a new iCloud account. No Updates: Updating macOS will often re-lock the device. and Mac mini)