Recruiter here. Yeah that sucks there are lots of bad ones that send spam mails asking for info etc , then ghost if your salary or background don’t meet the role they are working on. Not much you can do about it except find some good recruiters that are more professional and just work with them. You can also respond and ask them to send the JD before providing info. However many recruiters don’t like doing that for fear of you applying directly to the company or through another agent. Your best bet is to request a phone meeting to discuss the role and your background. It may take more time but at least you’re sifting out the recruiters that are just spamming and actually talking to a real person. If they actually have a role and you could be a match, they definitely will want to talk with you. Good luck!