I just picked up this bike last week, its my first bike in my adulthood so I am still learning

I am having issues shifting my front derailleur, I have been watching videos, reading, and adjusting for the past few hours
May have to take it to the shop but thought I would ask for some advice first

I have 3 gear on my crankset

It is physically hard to shift though the gears because the cable get very tight
When I loosen the cable to make it easier to shift there is not enough tension shift though the gears


Im thinking I may have bought someones project bike, thought I was getting a decent bike