Spoiler Short-code in the Short-code plugin

There is a style for your WooCommerce tabs that is causing the center align

.qodef-woo-single-page.qodef-custom-product .woocommerce-tabs .entry-content.woocommerce-Tabs-panel--additional_information, .qodef-woo-single-page.qodef-custom-product .woocommerce-tabs .entry-content.woocommerce-Tabs-panel--description {
    text-align: center;
}

either find where that is entered and change it to text-align: left;

or place into your custom style sheet

.su-spoiler.su-spoiler-style-default.su-spoiler-icon-chevron.disclaimer {
    text-align: left;
}

Note that will only left align the Spoiler Short-code with custom class “disclaimer”

_______________________
I suggest you study up how to use Chrome DevTools (right click/Inspect when using Chrome – other browsers have similar) to test out css changes
https://developers.google.com/web/tools/chrome-devtools

Get familiar with CSS

Check to see if your theme is using a Custom Style Sheet or an area to enter custom styles. Don’t make changes to your main style sheet as they will be overridden on theme updates.

A plugin like Child Theme Wizard will create a custom style sheet for you
https://en-au.ww.wp.xz.cn/plugins/child-theme-wizard/
or
Child Theme Generator
https://ww.wp.xz.cn/plugins/child-theme-generator/