WhatsApp Video 2026-10-20 at 22.25.05

like i have a rough track of 3 songs with me but like the songs transitions arent gud like any song is coming from anywhere, its not lookin gud, moreover i took the songs from the practice video, multiple practice vid, so the sound of the audio isnt stable, like its looking like two different songs all together, overall i want a smooth song, with perfect audio, maybe from the original song or whatever u want, a perfect track which sound amazing and like gud transitions, which app should i use