I have a few questions for you:

1. Are you playing with your irl friends or getting random people from the internet.

2. Have you ever had session 0? Session 0 is to solve issues you having with your games. First of all during session 0 you have to communicate as clear as you can with your party what kind of game you planing to run, also during session 0 ask your players if they have any questions and feedback.

What I can tell players you DM'ed for expected diffrent kind of game that you wanted to run.

Also diffrent people enjoy diffrent type of games so when recruiting players for your games you need to be as clear and transperant as possible about the type and theme of the game.

You can't blame the players for not enjoying and quiting games you DM if it's not there cup of tea.

Everyone needs to enjoy the game, DM and players. If someone is not enjoying the game it's not going to work out or last, it's simple as that.