Sharepoint Lists - Ways to organize bunch of lists?

[Learnfromyou]

I have a Sharepoint Site and inside Site Content it has all of our lists that I use to connect to PowerApps... Would like to know what are the best ways to organize all these lists (50+) that I have. I cannot create folders and place lists inside the folders.  It is getting a little messy. 

Also for some reason, I cannot create subsites anymore in Sharepoint site... was this feature removed?

[#2]

@Learnfromyou there is no way to organize lists currently.

If your site is a communications site then you won't be able to create a subsite. Microsoft are moving away from this towards hub sites with associated sites.

Rob
Los Gallardos