What's the best free video editing software for PC?

I really enjoy using CapCut! I have the Pro subscription, but it's not necessary to get the most out of the app. It's user-friendly and offers a great range of tools, including color correction, audio editing, and keying, among others. Additionally, there are many effects, transitions, music tracks, and sound effects to choose from.

In My Opinion

DaVinci Resolve (Windows, Mac, Linux) Tops the List,  DaVinci Resolve Free Version Provides Most of its features for the public, its a professional-level video editing, color grading, and audio editing software ,Multitrack editing, advanced trimming, and color correction , Industry-standard color grading tools, including curves, LUTs, and HDR. Professional-level audio editing tools, including EQ, compression, and reverb.Built-in Fusion page for creating and animating 2D and 3D visual effects.Organize and manage your media files, including importing, exporting, and transcoding.

Filmora

Most of my edits i use filmora, its fast in renders, works great on smaller machines (computers) and obviouly great on heavy machines. I'm a constant filmora user from last 5 years. Created/Editited 100s of videos for my clients across the globe. Neve Lets you down, also it has.

Easy-to-use, drag-and-drop interface for beginners and pros alike.Import media files from various sources, including cameras, phones, and computers.Trim, split, merge, and arrange clips on the timeline.Access to a vast library of transitions, effects, and color adjustments.Adjust brightness, contrast, saturation, and more. Adjust audio levels, add music, and record voiceovers.Export videos in various formats, including MP4, AVI, and MOV.
Best Part: Perfect for beginners, with a gentle learning curve.

CapCut (PC VERSION)

After I Create Videos , the ones needed captions I Prefer CAPCUT, even if you cannot buy the premium or paid version , the free version gives us most of it. 
You Can Just Put Your vids to capcut and it will Automatically add captions to your videos, All you need is just Check it again and do corrections if needed. Mostly It Does not make mistakes. Also user-Friendly Interface: Intuitive, easy-to-use interface for beginners and pros alike . Edit multiple video and audio tracks simultaneously. Advanced Editing Tools: Trim, split, merge, and arrange clips on the timeline. Access to a vast library of transitions, effects, and color adjustments. Adjust brightness, contrast, saturation, and more. Adjust audio levels, add music, and record voiceovers. Export videos in various formats, including MP4, AVI, and MOV.

These Are Also My Go To Softwares to Edit when i'm doing my work. Hopefully this will help you.

I'm sharing my personal opinion.
There are many options for free video editing software, but in my opinion the two most popular free video editing software are Davinci Resolve and Capcut.

• Davinci Resolve There are two versions, free and paid. Here you can use everything you need to edit videos. There are some limits in the free version, but you can get much better output in the free version. Here you can make beautiful color gradients, edit audio and do animations too. Just remember, the free version can render up to 4K Ultra HD and 60 fps.
• Capcut This software also offers two versions, free and paid. But if you want, you can try the free version, which has some limitations. There are both phone and mobile versions, since the PC version has been asked here, I'm avoiding the phone version for now. Capcut's speed camping features. This is my favorite feature! Here you can see Graphic editor option in a beautiful way. If you have ever used Capcut, you must try it.

In my opinion, DaVinci Resolve is the best video editing software. It offers both a free and a paid version. You can start with the free version, and if you need extra features later, you can upgrade to the paid one. It’s affordable, with no subscription fees, and the license covers two computers, plus you get a bonus license for Blackmagic Fusion. Another great free option is Blender, which not only allows video editing but also lets you create 3D scenes.