Wells are all so different. In my area, we have few aquifers, rather it's mostly underground rivers. So, as usual, "it depends" (sorry!) Water deep down can be under a lot of pressure so when the driller finally hits water, it can rise a lot in the well casing. At my parent's farm there is a 150' well in which the water rises over the top of the well casing when the pump isn't on.
For your issue: like @ecnerwal said, your pump may be worn out. That happens. If not, to properly size a replacement pump, you need to know what the well's production is, the static water level and the draw down level while pumping a known volume of water. Fairly technical stuff and easy to screw up. If you put too large a pump in for the well's production capacity, you'll be "sucking air" and that's very hard on pumps. BC this is a DIY site, I hate to recommend it, but you may need to bring in a good "well/pump guy" to figure out whats going on.
My best guess, based upon what you said, is a worn out pump.
EDIT: I'm adding to my answer: There are lots of pump designs out there. Some are low horse power, high pressure but low volume. Some are the opposite. The most important part is to know the characteristics of the well and match the pump and/or pump system to it. Not an easy task for a DIYer, IMHO.
A friend mine, maybe only about 10 miles away, ended up with a very low producing well, on the order of 1-2 GPM. He ended up having to install a large, non-pressurized holding tank so he could get adequate flow for things like taking a shower, watering the lawn, etc. The well pump would keep slowly filling the holding tank and then an above ground pump (centrifugal) would pump from the holding tank to the pressure tank. Obviously fairly complex controls where needed so as not to draw down the well too much, or empty the holding tank. Sensors and floats where involved.
Hopefully your well produces enough water and all you have is a worn out pump, or maybe the wrong pump.