Why is it so hard to find a Gamma alternative for making slide decks??

Oh man trying a few tools lately cause i need something better than gamma for making my slide decks
Problem is in gamma now the slides that I make can be recognised by everyone from a mile away.There is JUST SOMETHING like its common outline,visuals and format that kinda falls apart, I dont really need perfect tool but I also dont wanna spend half my time fixing things to make it look real and authentic deck with relevant short crisp details. 

You guys actually found something that holds up better in real use or is everything pretty much the same?