I hope this is the right forum. I'm trying to share a house I made, but the images are too small, so I tried using print screen, but it shows my desktop instead of the game. Next I tried using obs, making a video, using screenshots from that, but they are very blurry. Is there something else I can try?

I use FRAPS, just the free version. https://fraps.com/ you set the key to what you like and the photos go into a folder. This takes bmp shots.

I then bulk convert them to pngs with another free program called FastStone
https://www.faststone.org/ drag the bmp shots over to the right, convert and done in a few seconds.

Most of creators here using Fraps.
If you have Win10 or higher, the most simple way to take screenshots without installing anything is snapping tool.
There are other new programs like Greenshot and PicPick. They offer to make signs and frames after take shot.
I prefer ScreenshotCapture myself. It shows dialog screen of what area you want to cut and then saves all shots in .jpg And also use default Windows snapping tool myself when forget to load ScreenshotCapture. It works very similar as ScreenshotCapture