JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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You should be able to integrate Stripe payment to your form and then embed the form to your Wix site.
Stripe is found under Payment Fields. Detailed instructions regarding Stripe integration can be found here: https://www.jotform.com/blog/64-JotForm-Stripe-Beautiful-Payment-Forms-in-Minutes
To generate the embed code that you need for your site, simply click on publish while you are on the form builder view.
Then copy the URL for your form.
Instructions how to embed the form to your Wix website can be found here: https://www.jotform.com/help/70-Adding-a-form-to-Wix-Site