A free mod for Stardew Valley, by DJ-STLN.
Combat Controls - Fixed Mouse Click is a simple mod that adds an option to turn on mouse click control for your character.
You don't need to download any other mods to be able to use this since it is a standalone addon.
To install it, just download the files you will need from the link in the description and you are done.
You will need to put the CombatControls.zip folder into your StardewValley/Mods folder.
The next step is to unpack the files.
This can be done by clicking on the 'Unzip' button and it will show you the files that will be added to your game.
The last step is to launch the game.
