I am using my Instagram on my mobile but now I am confused that How I can instagram login on a computer. You can go with the given steps:
Open your browser
Visit the Instagram login login
Enter your login details like username, email address
Enter your password
Click on Login
read also: https://ityug247.com/instagram-account-is-disabled-how-to-enable/
Instagram app for Android:
On the login screen, tap Get help logging in below Log in.
Enter username, email or phone, or tap Log in with Facebook.
Tap Next, and follow the on-screen instructions.
Regards,
Peter