Hard start when cold and loss of power

I am going to bet that this is a fuel issue. Here are some guides that will help with this:

https://www.2carpros.com/articles/engine-cranks-excessively-before-starting

https://www.2carpros.com/articles/symptoms-of-low-engine-power

So I would suggest starting with checking the fuel pressure when you turn the key on and are cranking the engine.

Here is a guide just for this:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Let's start with this and we can go from there. Thanks