I prefer downloading the videos to my PC first and then copying them to my phone. I think it’s safer because it’s much easier to catch a deadly virus on your phone. Phones have a weaker protection system, and it’s hard to delete a virus from there.
That’s why I just use this
youtube download site to download videos to my PC, trim them to a necessary length and then copy them to my phone. It doesn’t take too much time because downloading is faster on the PC.
I recommend downloading this way because it’s safer than just using your phone. It also gives you more power over the videos you download.