Honestly, it will always look like a patch until you respray the whole wall.

That really sounds like it would turn into spraying all 4 walls so they all match... nightmare.

Can take the opportunity to move outlets to where you want/ add sconces/ cut into drywall like crazy and make edits and then just respray the whole thing.

I've used texture paint with a texture roller (looks almost like large Velcro) with somewhat OK results. Not gonna be perfect no matter what you do.

Do those give you the sort of small texture like in my first picture?

I don't mind if it's not perfect, I just want to get it in shape for selling.

You can go old school and use a brush. With enough practice you might be able to match the splatter size https://youtu.be/iOzpbqqJeVE

Also, the water based texture sprays are junk. If you're going to use that, I'd recommend using the oil based type (stinky, but way better quality). Warm up the can in a bucket of warm water if you're not getting fine enough splatter. The good thing about oil based is that it dried in like 10 minutes, so you can sand it off and go again.

That was cool, thanks.

I’ve found that you have to feather / blend the homax can texture a good ways out into the wall to hide patches. In my experience it helps to soak the can in warm (not hot!) water before use to get a finer spray pattern, ymmv. Usually that + a quick knock-down w/ a drywall knife or a quick sand after, and I’ve been able to decently match the “orange peel” of our 1930s plaster doing repairs or even adding new drywall walls and wanting them to appear original.

That is a rolled texture. Thin down drywall compound and roll it on.

Thank you! Had no idea what it was even called.

This is why I hate drywall texture. Just keep it smooth and you can always blend in a repair.

Yes, and you can thin it a bit to adjust if needed,.

Definitely make sure you warm the can up sufficiently and shake very well. The texture won't get fine without those two steps. Texture is sadly difficult to match... Good luck.