Randeep W. What does your email offer look like? Do you have a free trial?
If you're messaging isn't good enough over email, then I worry about the effectiveness of your LinkedIn Ad messaging, which is way more expensive.
I'd suggest scaling back the LinkedIn Ads and scaling up your efforts over email. It's much easier to test messaging and offers over email, you can pivot faster, and it should have a much lower cost per interested lead. You'd likely get more return from digital ads once your messaging has been proven and your ICP clearly defined.
There are a lot of cool and clever plays with cold email that involve AI, automation, enrichment, and personalization. If you're running static, generic templates in Apollo and not seeing much success, it could be a decent time to re-evaluate this part of your GTM motion. Shoot me a DM if you're open to sharing some ideas.