Every node in the game has a different rate of speed in which you get materials. This is based on distance and workload. Workers also vary in tier, where the higher tier provides faster workers and more stamina to do more trips without needing fed. This means in some locations, a Tin Ore node could give you over 2.5M in raw profit per day with an Artisan Goblin, but another Tin Ore node somewhere else may only give 1.2M.

With this said, when you start your empire you're going to want to make alts so you can utilize their energy pool that replenishes. This allows you to roll more workers. I'd start off with Blue+ workers as anything below that is pretty much a waste of time. If you ever seen cheap Artisan/Professional workers on the market, feel free to grab them as it saves you time.

Your worker is likely a low tier, working on a node with a high workload/distance. Keep in mind a lot of the big stacks of resources you see have been accumulated for weeks, months, sometimes years as it's passive, in the background profit.