There are several free video editing software available that can help us to edit YouTube videos with ease. Some of them are:
YouTube Studio Video Editor
Icecream Video Editor
Lightworks
These are the free softwares that allow you to edit videos via both basic and advanced video editing features, add texts, filters, overlays, transitions, and other special effects to the video and export the video to MP3, GIF, MP4, AVI, WMV, MKV, MOV, and other formats.