all companies want hire you asap and all those companies also wants you to sign a contract with at least one month notice leave

They're smart. If you say that you're hiring ASAP (way shorter than a reasonable notice period) you're filtering for the unemployed who are willing to accept worse offers.

I really like our worker protection laws. If the company says, you have to give X months notice, the company itself must give you at least X months notice or have serious grounds for termination (e.g. getting physical, stealing company property. Not the "current financial situation")