jQuery is not defined

Hello everyone! I just tried to use your plugin, which btw is exactly what I need and really useful, so congrats are in order!!!

I’m currently building my own theme and I have deregistered wordpress built-in jquery due to conflict with some of my custom scripts (I know it’s not advised but it was the only way to keep my scripts running) but I think that due to this de-registration I get the ”jQuery is not defined” error when Image Slider Widget is trying to load and of course this means that it doesn’t work! Unfortunately jQuery is not my strong suit, so I’d like to ask for some help if it’s possible!

Thanks in advance!!!

https://www.ads-software.com/plugins/weptile-image-slider-widget/