Using a camera for videos. Could use some help.

Backstory: My wife is trying to make youtube Yoga videos and we're both completely new to all the features of the fancy cameras. My relative let us borrow his Canon 3ti to try making a video. While trying to record the video it stopped recording at 12 minutes. Also with all the features it was difficult for us to get it recording to a clear picture.

After some research it appears many cameras stop recording after a set amount of time. Is there something different we should be looking for? (some sort of video-camera vs a normal camera) We'd like to get a camera that doesn't stop recording after 15-30 minutes. Any recommendations? We bought a Rode Wireless Go as the microphone. I don't want to go all out on a $5,000 system, but I realize these can get expensive quick and that $500-$1,000 worth of stuff can add up quickly.

Anyway, I appreciate any time someone spends responding to this. Thank you.

Follow up edit: We ended up buying a Panasonic HC-VX870K