How much traffic is too much traffic for a wix site? Can I use my own servers?

I absolutely love wix and would love to stick with it throughout my entire project but unfortunately the servers are really concerning me when it comes to expanding on traffic. The functionality and so much more are great, they make building the site a breeze and especially for what I’m doing. Still, I am very limited on how much traffic I could bring to the website since wix only lets you run everything on their servers. Is this my only option? Is there absolutely no way of hosting from my servers, at least once the wix servers can’t handle it anymore too well? It will be a shame having to leave wix because of this once the website begins to expand…
Thanks!

You would be better suited going through Wix Support for this and they can put you in touch with the correct department to know more about this.
https://support.wix.com/en/about-wix/contacting-wix-customer-care