Actually telling things you like is a good thing. Why would it be a bad thing? Getting zero job offers is mostly, at least from my experience, a result of lacking the needed soft or hard skills (sadly errors can occure here - false negatives) or someone who doesnt meet organizational requirements (like the things we discussed here). In my process I tell in the first contact, that I am looking to fill a full time position in my team. If the candidate neither at the end of this call or in the organzation process for the second meeting says, that working full time is not an option, well sorry, thats just unfair. My opinion.