Drug Test in CA for Residential Counselor Position

Hello! I am currently in the onboarding process of getting a position as a residential counselor for at-risk youth.

On the job list (ZipRecruiter) it did not state anything about drug testing. I pretty much smoke weed everyday and am always trying to ensure that the jobs I apply to won’t drug test.

However, during orientation (this past Monday), they provided a paper that described their “no drug & alcohol” and a “random drug testing” agreement (stated all employees are in a poll and can randomly get selected for drug testing either pre-employment or after).

Due to this, I am not sure if I should proceed. I stopped smoking after orientation but know that it will take about 1-2 months for it to be out of my system since I am a heavy user. And I’m scared to get randomly tested the first month or so, and lose the job because it comes out positive.

I was planning to talk with the hiring manager again and ask what they look for in a drug test or ask how they feel about weed. If they are against it, I was planning to withdraw and ask them if I can reapply again later on.

Should I do that? If so, how should I ask them?

(also I understand weed is legal in CA, but I've been reading that federal jobs or jobs that receive federal funding can fire or not hire people because of it)