I just want to understand why when i check Is Trigger on my 2D player he dont collide with any layer but my trigger works fine instead of when i uncheck Is Trigger he collided and works i really want to to knew

Welcome to Unity Answers

The best place to ask and answer questions about development with Unity.

To help users navigate the site we have posted a site navigation guide.

If you are a new user to Unity Answers, check out our FAQ for more information.

Make sure to check out our Knowledge Base for commonly asked Unity questions.

If you are a moderator, see our Moderator Guidelines page.

We are making improvements to UA, see the list of changes.