You need to get them on the web somewhere like here at FM they have a place to put them so you can add them to your post. If you look at the address that FM puts in the list you will see a [img ] and a [/img ] that’s the code you need for it to appear in the post. You put the web address in-between the codes. If you right click on any pic on the web and click properties it will give you the address of that pic. Copy that address and put the code in front and behind and presto there you go.
I look at the properties of other people’s pics to get better places to put them.