Seeking Suggestions to Improve Outbound Booked Meetings in a Niche Compliance Risk Market

Hi guys, I need your ideas and suggestions for outbound booked meetings. Clay is new to my tool stack and still in the experimenting phase. However, my current system with instantly, apollo and rainmaker my outbound generates 40-50% open rates, 8-12% CR but replies are time objections, ooo or none. Polished up thewebsite recently. Currently user activity levels shown in GA4 is promising. I'm trying to figure out where is the leak. My TAM is very niche, compliance risk involved market. Offering outsourced services to a regulated entities. Any ideas?