Lost half of my work!!! 🤬

I am done with this app that keeps freezing mid way through my work or completely kicks me off the app screen. Now that Ive spend well over 4 hours into to a late night, on a very important educational video. After rendering and loading up to YouTube. I began watching it and got halfway through it, realizing that half of the audio was missing. Don't know where it went or how to recover such a big missing chunk that would not reappear with as many times as I tried resetting my phone. It just never saved after the last time it froze and kicked me off. This has made me super angry and will not deal with this app any longer. I wouldn't recommend nor give it even one star