I ended up asking google's gemini ai what it was since it's by google and it basically said it was nothing to worry about.
The good news is the main URL (google.com) hasn't actually changed! What you're seeing after the question mark (?) is additional information added by Google. Here's a breakdown:
https: This indicates a secure connection to the website.
? This symbol separates the base URL from any additional information.
zx=1732314498281: This appears to be a unique identifier for your search session. Google might use this internally for tracking purposes or personalizing your search results slightly (but it shouldn't be a major change).
no_sw_cr=1: This likely means "no switch country redirect." This could be related to Google trying to keep you on the same regional version of the site even if your location might suggest otherwise.
In short, the additional information isn't something you need to worry about. It's Google's way of managing your search session and potentially personalizing it a bit. You can still access Google normally and search for whatever you need.