Hello everyone! Just wanted to add a few thoughts of mine regarding the subject

The easiest solution IMO would be to use external tools that allow you to upscale images without losing quality or sharpness. Now there are plenty of them on the market, like Topaz Gigapixel AI that Gwpriester already mentioned, AI Image Enlarger (yep that's the name for it ), or ON1 Resize. The one I use the most is ON1 Resize, but you can experiment with those that suit your needs the best!