obsidian-iconize VS icon-brew

Failing that, can anyone explain to me how to use SVG icons in custom callouts? The help wiki says you can do it but I don't understand how, like where am I supposed to store the SVG and do I need to callout the entire filepath or just the name or? I installed Iconize and found a zip folder with all the latest lucide icons, but even after unzipping that and moving them around to different places in my vault folder I can't figure out how to make them actually show up in custom callouts.

I just tried to upload some plugins, but they don't want to work for some unknown reason. Especially, knowing like one plugin is definitely working, it just doesn't want to be installed. Thus, I'm asking question how to do it other way than obsidian plugin adder. I also tried to turn of/delete other plugins, but it didn't help, thus I don't know what to do. Plugins I try to add: https://github.com/Make-md/makemd, https://github.com/joeyuping/quick_latex_obsidian, https://github.com/FlorianWoelki/obsidian-iconize

Probably Icon Folder: https://github.com/FlorianWoelki/obsidian-icon-folder & a CSS Snippet.

It's called Icon Folder.

Icon Folder - Lets you customize notes with emotes. Really handy if you're a visual person like me who finds the visual cues handy to know at a glance what I'm doing.

Obsidian Leaflet this is the game-changer for me, this genuinely puts it on par with stuff like world anvil. It lets you make maps with markers! linking to other documents, other maps, its genuinely awesome. It's a little difficult to use but you get the hang of it pretty quick once you figure out exactly how to import a photo. link

IconBrew