You cannot just manifest and expect things to change.
Alone it is hope, luck or coincidence.
As per its definition, to manifest is to be clear in the mind.
Start there by all means but it must be followed by pragmatic action.
Action will provide you with evidence to which you can measure and adjust.
As you start to see change that will instil confidence leading to further clarity, decision making and action.
By all means manifest, but for goodness sake, please also take action.