One of the best tools I've encountered related to video content creation is this one, and I'll tell you why:
1) It's a browser-based tool, you don't need to download it and you could access it using any device.
2) It's so responsive and it doesn't require computing power, even if you're device isn't that fast, it will run smoothly, as the computing power is found at their servers.
3) It's for free, and it leaves a watermark that isn't big, and also isn't irritating, and it's a watermark from a verified and recognizable brand, so it isn't that bad.
4) It has a desktop version, a mobile version for both android and IOS.
For me, It's one of the best free tools I've used for free video content creation, and it's ADOBE SPARK
Adobe needs no introductions, and Adobe Spark is one of the best tools as I said, and it's so fast that you could create simple videos in less than 5 minutes, maybe even less than 2 minutes, depending on the video.
Also, it's so powerful, especially when creating video slides, when explaining an academic topic, or even a normal topic.
So instead of reading, go ahead check it out, and please come back again to leave a review as it's so important for us, also see the articles provided below.
Hope this was helpful, and I wish you great success with content creation.