hey I recently got this 2004 ford f 150 lariat 2wd, and the truck is having a long crank but it does start, i could not figure it out if it is the battery, the starter, or the fuel pump, i need help and opinions to my fellow truckers pls and thank you!

 

What if you cycle the key to the on position for 1 second a few times before you try to start it?
does it matter if the vehicle is hot or cold it how long it's sat overnight, 5 minutes, etc. More details are needed, but to me sounds like maybe a fuel issue.

 

It only happens when the car has been sitting for a long time, but when the engine is warmed up it starts fine