I used to use text to speech to make extra sure that my writings didn’t have any glaring mistakes but the problem with that is you’re having a computer basically massacre your words with the worst inflection possible. I only recommend it for the bravest who still love the writing after the robot is done chewing it up. Lately, what I’ve focused on instead is using speech to text, even though programs tend to be sporadic on how accurate they are. I’ve written well over 1 million words just touching a screen’s virtual keyboard though.
If you want to do a work fast and dirty, I recommend first that you feel pretty confident in your ability to figure out mistakes. Do a draft readthrough with basic performance and think about the cohesion of everything you’ve laid out. Once you get to the end and you feel pretty happy with it, run the draft through a basic check to make sure you didn’t misspell anyone’s names. Then Grammarly and basically MS word. Set Grammarly to as casual as possible because it’s kind of a jerk. Try to recognize where Grammarly is being dumb and where it actually has a point. It will catch the vast majority of problems. Then MS word will basically fix up the rest of the grammar and the punctuation like commas. At this point you’re honestly like 90% there and actually listening to the text read will get you the extra 10% but the absolute time investment for that is absurd, so I instead just recommend putting it aside to write more stuff. This is my method and I mainly recommend it if you have a lot of experience at making sure stories read well. I make a ton of errors but I try to make sure the heart and expression of the story is front and center.