How to insert image

method 1: Context menu

Right click on image then hover over Clip to Obsidian option for select notes
Image will save in open vault's attachments folder and image link will added in selected notes

method 2: Drag and drop

Select image which you want to copy.
Drag selected image to the required notes and drop it.
Selected image will auto-save into focused note.

method 3: Ctrl+C and Ctrl + V

you know how to do.