I used to have an Chinese app called TTS that I found on Reddit that could connect your TTS reader to using Microsoft's premium voices, god that was awesome. I used an app called Read Aloud, those were the golden years. Since I can no longer use MS voices and ReadEra Premium started offering TTS I just uninstalled the two above.

ReadEra Premium gives you some network TTS options but they are only Good. Not sure if the free version offers TTS.

WeChat reader 微信读书, only issue is that if you upload a book they will read everything. So get used to suddenly a page number being read out loud.

Maybe you could get a paid version of ChatGPT and remove all numbers and annotations.