I can give you more specific advice on editing or find the perfect audio to match! Countdown-Boom | Royalty-free Music - Pixabay
Use software like Audacity to increase the bass if the boom needs to sound more cinematic.
If this specific sound isn't perfect, you can find similar audio at these sources:
Match the "boom" exactly with the final digit (zero) or the visual explosion/change in your media.
The sound effect "Countdown-Boom" (specifically ID 76577, often credited to Russintheus) is a popular, dramatic cinematic effect. You can download it for free from Pixabay . Format: MP3 Source: Pixabay License: Free for use under the Pixabay Content License.
