Player Dead Body Add-on 26.30+/26.11+/26.10+/26.0+/1.21+

Lost items after death will be stored in one protected place thanks to the mod Player Dead Body. After dying, a body will appear, and all dropped items will be automatically saved inside it. Interacting with it will open a menu where the "Grave Open" button will be available for instantly taking back the contents. In addition, you will receive the death coordinates in Minecraft, so it will be easier to find the body.

You can change the body to your own skin:

Rename the .mcaddon file to .zip

Open the resource file

Go to textures > entity > custombody

Delete the old skin, insert your own, and rename it to 1.png