THE BEST WAY TO GET INSPIRED FOR DESIGNS

not only you get inspired but you can even export the designs that you find to .SVG format, then you can import them to any software.

this website has a ton of free power point, google slide templates you can download or get inspired from.

I have used slidesgo a lot in the past. It really is a gem of a site.

As my inspiration i use Dribbble and Behance, there is a lot of great pro works.