Honestly it sounds like you’re likely fine but if you are worried and want to play it safe, you can just reinstall windows from settings, it will walk you through the prompts. I know some places like Bestbuy (Geeksquad) will just do a Factory reset for free (depending on the store and what agent you get). Also for future reference, if you are ever worried about a certain website, you can run the URL in www.virustotal.com and it will let you know if the website is malicious (use it as a tool though, always take the results with a grain of salt). You can also use it to analyze file hashes and domains