Can I connect wirelessly to a regular monitor?

I just bought a Lenovo Yoga 720, and I didn't realize that because it didn't come with an HDMI or a VGA port and I really like working from a monitor and keyboard, so is there any way that I can like fenagle something to where I could just buy like a wireless adapter or even buy a monitor that connects via Bluetooth or something?

You might try a Bluetooth keyboard.

Unfortunately, with laptops, what you buy is what you get.
the closest you cold do is using Chromecast, but that only sends things in your Chrome browser…

Monitors can't connect that way -- they require too much data. Look for a docking port that works with your new toy -- maybe it can deliver what you want via a USB-C port