I Bought elementor pro so I can have a justified gallery that would load faster than another plugin I’ve used so my potential clients can see my work in a neat way, at first it was working how I liked, but now the gallery loads super slow and I followed some YT tutorials but nothing is working. Any help is appreciated.
Also sometimes I getting an error 500 message.
I’d recommend you consider investing in the [Imagify plugin](https://wordpress.org/plugins/imagify/) – it minifies the image file sizes & you can control compression so you don’t loose resolution…
Source: I work for a large digital marketing agency & we use it on client website builds with no problem
You haven’t supplied enough information. But generally a slow gallery means your images are too big.