Dough ball

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Hi everyone! I’m new to the site fairly new to baking I’ve been trying to make several loaves of bread and when I add all of the ingredients into my mixer it never really fully comes in to forming a dough ball is still very sticky and loose I’m not sure exactly what to do II have been adding extra flour but I don’t wanna end up with a dense loaf so if any of you have any suggestions I’d appreciate it.