I can’t help with obtaining someone else’s Instagram password.
To recover your own Instagram account, use the “Forgot password?” option on the login screen.
Reset your password through the email address or phone number linked to your account.
If you no longer have access to your email or phone, use Instagram’s account recovery process.
Check saved passwords in your browser or device password manager if you previously saved your own login.
If you suspect your account was hacked, change your password immediately and review account security settings.
Enable two-factor authentication for better protection.
Contact Instagram Support through the app if recovery options do not work.