Contact form not sending email, but 'sucessfully sent' message comes up

Hello there!
This might be a stupid question, but it’s driving me insane.
My contact form is acting as if it is correctly sent, but I’m not receiving emails.

I’ve tried creating severa different contact forms but none of them seem to work.
I’ve also tried with a different contact form plugin, but I still don’t receive the emails in my inbox (also tested with several email accounts and checked the spam folder).

I’m starting to think it is a problem with my wordpress website and not the plugin?
Any thoughts on what’s possibly happening here?

Thank you for your help!!!!

https://www.ads-software.com/plugins/contact-form-7/