Trust vs Depend

"I trust that guy as far as I can throw him"

"I can't trust him to complete the project on time"

'Trust' is used in two different ways. One is the usual opposite of falsehood. If you can't trust them, they are a liar. This presumes intent and is almost demonizing.

The other way is dependability. Trust of the outcome. If you can't trust someone this way, it's not a reflection of their evil intent but about ability to execute. This is very different from falsehood. You can actively do something about this.

The other way you can only seek other sources of information.

So instead of 'trust' 'use 'depend on'. 'Trust' makes it sound like you think they're lying. 'Depend' just means there is doubt without judging.