Enclosure makes printing some plastics much easier/safer, and it’s become common/inexpensive enough to be a “default” option, especially with options like the Carbon being so affordable.
But the tool has to fit its purpose. If you only print PLA/PETG, then it’s not really necessary. I mostly leave the door off my printer, and only attach it when I need to print ASA or ABS.
I might be seeing it wrong, hard to tell from just this perspective, but could it be placed so the entire side, or entire back, is making contact with the bed? Increasing your contact surface can help dramatically as I said in my other reply.
Check your bed adhesion (clean the bed with detergent and hot water, and I recommend a quick wipe with 91% IPA before each print) to prevent the model rotation seen in this picture, but in general parts with that little bed contact can be difficult to print correctly. If you can’t find an orientation that fits on the bed with more surface area, then slow the print down to minimize forces pushing the print. While supports help, they don’t hold onto the print as firmly as the bed does (on purpose).
I’ve run into some frustrating issues with small contact points with print beds. Another option is to use a smooth PEI plate and use a glue stick or Bed Weld or something to help improve adhesion.
And I looked, and behold a pale horse: and his name that sat on him was Death, and Hell followed with him, and the horse said, “the end is neigh!”
(Neigh is what a horse says. The end is nigh. 😉)