Low water pressure

Crud and rust from inside the pipes can build up in faucet screens and restrict water flow. Try taking them out and see if water pressure improves. If not, you’ll need to start testing the pressure at the meter or the closest tap to it to find good pressure and work forwards from there. A tester is only a few bucks at Home Depot.
If your water heater is from the 80’s, it’s time to replace it and it would be a good idea to change out the galvanized pipes if possible.

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In the New Orleans area, we have had low water pressure for a while now. Old galvanized pipes are in the attic and we have an electric water heater from the 80s. Would updating the WH and pipe replacement help water pressure?

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Need some more information to better understand your problem.

What is "for a while"? Is this for a week or years?

Do your neighbors also have "low water pressure"? Is the water pressure just a little low or very low.... like less than half of what it was a few years ago? Has the water pressure ever been "good" at this house?

Where ever the later line comes to the house, there usually is water faucet on the outside wall. Does this faucet have more pressure than faucets in the house?

The biggest question is how long will you stay there, if not long term, do the least expensive things possible (including nothing).