Bypassing network restrictions may violate your school’s, employer’s, or country’s laws/policies. Proceed at your own risk.
If you're using an Android device, here are the steps to unblock apps: how to unblock apps
Social media, streaming services, and geo-restricted games. Change Your DNS Settings how to unblock apps
This only works for apps with web versions (like Instagram or Discord). Adjust Device Permissions how to unblock apps
To give you the best advice for your specific situation, let me know: What are you using? (iPhone, Android, Windows, Mac?)