Need Help to Increase HR Contacts from Clay for 297 Companies

Hey guys, I would like to ask for your help/opinion I have 297 companies and want 2 HR contacts per company – so 594 leads in total. But Clay only gives me 80 contacts → sounds like my flow is either limited somewhere or not set up correctly. Th filters I used (the company list and that they should be part of HR) Do you have any ideas what the propblem is and how i can solve it (i have the start package)