For anyone who has never done XSS attacks before, you may find these learning resources helpful.

https://www.owasp.org/index.php/Cross-site_Scripting_(XSS)

https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_She...

https://www.owasp.org/index.php/XSS_(Cross_Site_Scripting)_P...