I am trying to remove the white background from a photo of a needle so I can use the needle as a graphic on a t-shirt. I have tried to use a few of the solutions here, but I can't find the items they suggest, such as the "magic wand", and the "Select" menu doesn't work, apparently because the background is not a layer. Also, most suggestions are for previous versions of Photoshop Elements. I am using(or more accurately, attempting to use) Adobe Photoshop Elements 2021. Below is the photo I am trying to use(I apologize for the size).
Here is one way to do it. Follow along with my screenshot:
I forgot to mention that before you do anything else, you need to double-click the background layer in the Layers panel. That will turn the layer into a regular layer. When you delete the white pixels, the background will then be transparent.
Just to add to @Greg_S. 's excellent walkthrough - the Guided > Replace Background feature does a pretty good job too on this particular image just using the one-click Select Subject button. It needs a little tidying up with the Refine Edge Brush, but nothing too difficult - it's helpful to actually choose a Color background for doing this tidying up work (rather than None) - but you'll then need to quickly go into Expert mode to delete the color background layer right at the end.
And also, I've noticed you're using a stock image for this project. Just wanted to make sure you are aware that if you are using this image to produce a t-shirt that you intend to sell commercially, you will need to purchase an Enhanced License from Shutterstock (their Standard License only covers non-commercial use for things like t-shirts).
I wasn't aware of the Enhanced License, as they are now included as a choice for images within the website of the provider I am using. Thanks for pointing that out, I will check with them to verify that I need one.