>>17841800no problem if you downloaded it and put it in the LoRA folder, you can press the red/black button underneath the generate button, it says "Show/hide extra networks" when you hover over it. That opens a window that has a lora tab. But really thats just a visual aid, all it does is add the text like "<lora:bluethebone1.9>" to your prompt when you click it. And most loras have an extra keyword you need to add but it will tell you on the civitai page, in this case it recommends writing "<lora:bluethebone1.9>, 1980s \(style\), bluethebone"
Try to generate this!!
>1girl, <lora:bluethebone1.9:0.4>, (1980s \(style\)), bluethebone, (retro artstyle), 