You can easily change your Instagram password by going to Settings → Security → Password. Enter your current password, then type the new one and save the changes. If you forgot it, use the “Forgot password?” option on the login screen to reset it.
To change your Instagram password, open the app, go to Profile → Menu → Settings → Security → Password, enter your current and new passwords, then tap Save to update it.
To change your Instagram password, open the app → go to Profile → tap the three lines → select Settings and Privacy → choose Accounts Center → tap Password and security → then Change password. Enter your current and new password to update it securely.