When I try to reset and email password for a user, emails are not sent.
Email is not found in Admin > Logs > Email Logs
Check if the user has any External Authentication Type like SSO or MFA set in HR>Employees.
When you turn on 2FA or choose any Authenticator type for BMS, reset password will not send an email out to the user because they can not use this password anywhere in BMS.
If the authentication method is not set, please review our generic article here.