1. In case you need an unconditional/absolute redirect your submitters after filling out the form, please use "Confirmation Options" feature under "Form Settings" tab that can be configured to show either your custom text after a successful submission or redirect users to a custom "thank you" landing page/another form.
Locate the feature, click the "Redirect URL" choice and paste the URL of the landing page/your another form to redirect your customers to.
2. Another option here can be conditional redirect your users when a certain field equals to a certain value/option using "Logic" feature of your form.