I was also thinking when started first ads that I can't get a positive ROAS due to the redirecting, anyway then I started working on getting better ads and actually got positive ROAS. I'm pretty sure I still loose customers due to the redirecting, but still I'm able to make a profit. Just wanted to let you know to focus on learning creating better ads. Hope this helps you!
Im definitely going to change to Woocommerce, I can use 2checkout there directly on my website, no redirecting, that problem is Shopify, not 2checkout 👍
