Working at home has made it to where a task that used to take me a couple hours takes a couple of days, should I get a co-work office space?

If you have to many distractions at home and no way to fix that a separate work area can be a good thing.

Some way to tell the mind, “I am at work now, focus”

co-working can be neat, but it's distracting sometimes. you have to consider the lack of privacy, other people moving and talking around you, stuff like that. libraries are an option too, they're pretty quiet. the important part is to stablish a routine and to reserve a space for work only