A friend of mine advised me to change my WordPress website's login page URL and make it safer somehow. Any suggestions?
Your friend is right :) You can do it with some light WP plugins. WPS Hide Login plugin allows you to easily change the URL to anything you want and when you deactivate it, it changes back to the default one. You can also install the Limit Login Attempts Reloaded plugin to protect it against brute force attacks.
Aah yes, of course, plugins again, not surprised :D Thanks for the answer