I'm using Easy Youtube Video Downloader since a long time and it fits me perfectly. Each time I want to keep a video, I just click on the button under, choose the quality and that's all. I gave first 10$ for a donation in 2016 and I also paid 20$ in 2021 for the Pro Version. Maybe it's not a lot of money but I know it's important for the programmer to get money to live, work and keep the software updated.