The "Loading error - Retry" message on XVideos usually occurs when something is blocking the video player from communicating with its content servers. Primary Solutions
If none of the above steps work, it might be a good idea to contact Xvideos support. There could be an issue on their end that you're not aware of. Look for a contact form or support page on their website.
We know this sounds cliché, but for lifestyle streaming, it works. Instead of digging through settings, simply swipe down and toggle on for 10 seconds, then off again. This forces your Wi-Fi to find the strongest signal without you having to reboot the whole router.