Instagram/Facebook and Tiktok audio library

I bought this mobile app to edit for my social media accounts' reels. I found that it gets higher reach if I use their pool of popular music in the their platform. I wissh to have a way to get access to their sound library within the app so I wont have to do additional steps of edit within their platform.  They do have a good editing feature within each app but I am looking to streamline this process.