I sent the backup of my site to a different domain, but it does not open

I sent all the files of my WordPress site, which I built under the x.com domain, to the y.com domain via FTP transfer. I created a new database for y.com and saved the database username and password in the config file. There is no problem with the site, but when I type y.com in the browser, it redirects to x.com. When I type y.com/wp-admin, the page not found message appears. Do I need to make changes to another file or files?