When an option to create new Dynamic Web Application is missing/ not available in any version of the Eclipse. Follow the below steps to fix the problem:
Step 1: Click “Help” > “Install new software…”

Step 2: In “Work with:”, paste: http://download.eclipse.org/releases/photon/

Step 3: Scroll down to find “Web, XML, Java EE and OSGi Enterprise Development” option and expand it > check:
- Eclipse Java EE Developer Tools
- Eclipse Java Web Developer Tools
- Eclipse Web Developer Tools
- Eclipse XML Editors and Tools (optional)

Step 4: Finally, click “Next” > Accept the terms of the license agreement and click “Finish” to install the new software. Then a popup would ask your permission to restart the Eclipse. Restart it and you should find the dynamic web project option under project list.

