You have three options: line the clips up by hand in a regular editor like CapCut, use a phone editor with a multicam feature, or let an app do the syncing and the cutting for you. Which one fits depends on how much of the editing you want to do yourself.
Free and familiar. You stack the clips as layers, line them up by the waveform, and split and delete to switch angles. Fine for one short clip; slow for a whole song, and every cut is a chance to break lip-sync. See how to sync two videos by audio.
Some pro mobile editors offer multi-camera editing, often as a paid add-on: you sync the clips once, then switch angles while the video plays. Much faster than layers, but you still make every cut decision yourself. Check what the app offers today — these features change.
camrip takes 1 to 4 videos of the same performance, syncs them by their sound, picks the best shot for every cut and cuts on the beat — or in the pauses, for talking videos. You get a finished vertical reel and can still change any cut. It works in the browser on a phone or a computer.