What's up with Apple Search Ads?

I've been trying to promote my app on Apple Search Ads for the past two days and I'm hitting a wall. Here's the rundown:

• Day 1: Started with the suggested price of $1.30 per tap. Set it, but got zero impressions in the first 24 hours.
• Day 2: Increased the bid to $2, yet still no impressions after another 24 hours.
• Now: Bumped it up to $3, but still no sign of impressions.

My app is a free app with an optional $9.99 in-app purchase, so my budget is already pretty tight. How tf am I supposed to increase the bid further when even $3 isn't cutting it?

Has anyone experienced this issue with Apple Search Ads or have any advice on what I might be doing wrong? Any insights, tips, or alternative strategies would be greatly appreciated!

Thanks in advance for your help.