The algorithm doesn't care how often you post. Valuetainment uploads 7 videos in six days, MrBeast posts once a month, and reaction channels go five times a week. What matters is quality, not schedule.
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So let's talk about how often you actually need to publish to YouTube. Some people might say every single day, some people might say maybe once a month or whenever you have a good video. Well, let me just show you on my screen over here. When you look at Valuetainment, this channel has less than 4 million subscribers, but in the last 6 days has published 7 times. Now, if you look at MrBeast, he publishes about once a month or so. This month he published about 2 times, it looks like, and they're super high quality videos. And this guy over here, he publishes about 5 times a week and he's basically doing reaction videos. And so the answer is it doesn't really matter. Just publish really good videos and the algorithm will take care of it, as long as you're doing good videos.