Where the heck I did go wrong ?

Running a Shopify anime streetwear store with Printify and Meta Ads. Can't make the numbers work and looking for advice from people who've figured this out.

The pricing problem:

COGS is around $15 per tee. CPA on Meta runs $15–25, so at a $30 price point I'm barely breaking even. What price point are you selling at to stay profitable with paid ads? Do you compete on brand and charge more, or is there another way?

POD supplier question:

Anyone tried PODPartner, JetPrint, or YoCoal? They claim better print quality but shipping to the US is 15–20 days. Does that kill conversions or spike disputes? Worth switching from Printify?

Getting first reviews:

Zero reviews on a new store. What's the fastest legitimate way to get the first 10–15? Samples, buying your own product, review app?

Catalog size before running ads:

Have 55 products listed. Thinking of cutting to 10 focused SKUs before relaunching. Did a smaller catalog improve conversion rate or does it not matter?

ATC with zero purchases:

Ran Meta Ads in December and got 19 add to carts with zero purchases. Something clearly broke between ATC and checkout. No reviews on the store at the time. Was it checkout friction, lack of trust signals, or something else? How do you diagnose and fix this?

Rebranding vs fixing what's broken:

Debating a full rebrand and store rebuild before relaunching vs just fixing known conversion issues and moving forward. Did a rebrand actually move the needle, or was it busywork?

Real experience only, especially from people running POD with paid traffic.