Tuscaloosa has only had Uber available for a few months. Their first day was in the middle of August, 2016, so there's a good chance it's not developed or manned like it is in other cities. I don't know if Lyft is available yet (not seeing much on a quick google search for them.)
The city council in T-town just approved their request to operate in Tuscaloosa in the summer of last year.
Now, how easily available is a question for someone who has used Uber. When they first launch in cities, it's certainly not as convenient as it is in cities they've been operating for awhile. (Quick glance at my app shows three rides within 10 minutes ... but, I'm in Charleston.)