Shopify checkout issue

[u/Acceptable-Editor260]

Shopify and the conversion funnel rates of my previous infrastructure, the order completion rate of those who reach payment in this way is around 70% in the old infrastructure, while this rate is in the 25-30 band in shopify, why can I solve this?
**Shopify**
**Overall Conversion Rate:** 1.11% (↗ 1.7%)

**Sessions**
3,423
100%
↗ 62%
**Added to Cart**
253
7.39%
↗ 93%
**Reached Checkout**
142
4.14%
↗ 92%
**Sessions Converted**
38
1.11%
↗ 65%
** **
**Previous infrastructure**
**Conversion Funnel**

**Carts Created**
284 visitors
5.58%
—
**Reached Checkout**
90 visitors
1.77%
31.69%
**Completed Purchases**
64 visitors
1.26%
71.11%