Hello
If you try to directly click this URL https://www.walmart.com/ will it try to redirect you to another website?
You may also want to consider clearing the cache and cookies of your MS EDGE Browser and here's the guide https://support.microsoft.com/en-ph/help/10607/...
You may also consider running a Full Scan of your Antivirus Software just to make sure its not a malware(Trojan) that tends to redirect you to a promotional website. Here's also an additional scanner for free that will help a lot in removing such redirect threats.
Link: https://www.malwarebytes.com/mwb-download/thank...
Please let me know if you have further more questions with this and I will try to reply back as soon as I can.
Regards and stay safe.
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.