I’m in my 20’s and I can barely pump in the morning if there’s no food in me.
Just a thought, protein powder mixed with your coffee might not be doing it for you, I couldn’t work out on that.
Have a nice big breakfast first with carbs, and see what happens.
Even if I workout after breakfast Im still not “feeling it”, its not that I dont get a pump persay, but just general strength and motivation.
I generally like to have at least 2 meals and a snack in me before my workout, breakfast, lunch, and a pre workout snack.
Also as was mentioned and you have probably guessed, you are getting older, that has its own set of problems from a hormone perspective, but they can be corrected.
You can certainly use an NO product to “pump” but I doubt that actually helps anything besides making you feel good in the gym, which is worth something, but could be achieved just as easily with proper preworkout nutrition and diet.