if you like kobo, try the free kobo android app. but it will insisting on importing your books into its own database before cou can read them
once it has done that, you can delete the original downlod though, if you are happy with the results
moon+ costs less than a starbuck latte in its regular sales - and lasts a lot longer
it even has an author who responds to queries !
i think you will find that, apart from the small initial cost, it ticks all your boxes. it is. for sure. the most customisable of all teh epub apps, so if at first you don't like it, tweak its until you do.
but if you refuse to shop at play store, there is no simple AND legal way to get it
you can buy a one - off pre-paid virtual credit card from various sources if you don't want google to have any link to your actual bank/card accounts