Stable Diffusion on my own computer using the NMKD Gui. The latest version is way better than the 1.7.1 that I'm running but since my graphics card only has a measly 6 gigs vram, that's what I do most work in. It keeps what I'm rendering private, not to mention easier to find -- MidJourney trial drove me spare trying to figure out where my pictures were. Does work safe, kinda work safe, and most decidedly NOT work safe images. Entirely up to you, not a censor bot. Of course, not every model it uses has been trained with nudes/NSFW. Some are better than others. Check it out here: https://nmkd.itch.io/t2i-gui  

You can download and use it for free, no limitations other than your own hardware. But if you like it, there's a donation/pay what you think it's worth link. 

And censor-free models of many flavours can be gotten free or via donation at civitai.com. But you have to have a membership, also free for the basics, or a google account to log in with so you can access anything adult, be it the sexy or the scary.