I have the fdroid application, in its latest version.
It is also disabled automatic updates and all automatic options.
And I set whether or not to use the application. It always comes out with system startup.
Check in sd maid, for example. And disable the two options you have on startup at system startup. But it activates itself again.
I tried the last beta they released. And the last stable one. And they do the same thing.
It can not be done, so that it does not start with the system.
I upload screenshot of the two options that come out in sd maid of fdroid automatic startup. https://ibb.co/SmjVNHW
A hug and thanks for your help and time.