it's no worries, sometimes tech gets tough ^^;; heck i only ever manager to find saucenao from a twitter thread
so long as you've got an image url to plug in (for ex: https://forums.tapas.io/uploads/default/original/3X/0/4/041b718f0385aa34f5a26f828ed7977c6c78627d.png is the link for the first image you shared) you can plug it into either of those websites (tineye or saucenao) and 9/10 it'll immediately link you to the image source
no one means to come at you but but given a lot of folks here are creators (artists especially) we're very particular when it comes to potential art theft. so long as your respectful of the artworks original creator it's usually fine, giving credit or asking permission is just considered common courtesy 