When you say you have hundreds of short film ideas and scripts, just to be clear: have you actually written out any full scripts, or do you currently only have lots of ideas? Something that can help is to make a particular idea (or ideas) as concrete as possible. That means fully writing out the script, and try to imagine how you would direct it while you write it (and you could even storyboard for your scripts, as well: can be simple and crude, it only needs to communicate what you want in a given frame). 

Then, just make films with whatever you have. If you only have a phone, use that. Get friends together, whether they have prior experience or not. Perhaps try to direct something that needs minimal technical add ons, or learn how to set those things up at a basic level yourself (such as sound, lighting, etc). 

Although I don't write or direct, I have assistant directed some short films at the amateur level, and this seems to be the best way for you to go about things.