I'd buy used off of CL: you should be able to get a decent hybrid in good shape for $150-200. Look for a nice basic 7-speed hybrid that has the gearing you need to get around town and can do some longer rides on (like a loop around WRL). Mountain bikes go for a bit more but are versatile too. Find something that's a decent brand either sold in bike shops or DTC; if they sell it at Wal-mart or Academy, it's not a decent brand. Huffy is complete garbage; the Yugo of bicycles. Riding a bike is a joy and while getting around is useful, there's a good bet that you'll enjoy getting out on longer rides. I ride 10-15 miles every morning before work: not long enough to really be on a "training ride" but enough to feel good, have plenty of energy during the day, and sleep well at night.

Go too cheap (like the $99 specials someone spoke of here) and you'll get a POS bike. That means a $65 trip to a real bike shop to get it barely function, because, again, a new $99 bike is like buying mystery meat for 99 cents a pound. It might do the trick in a pinch but you really don't want to make a habit of it.

Working in the industry, I've probably seen 80 of those brand new Wal-Mart specials come through the service area, because the idiot at the box store didn't install the brakes correctly and they learned not to buy a bike at Wal Mart the hard way. I'll let them take a spin on my cheapest hybrid ($325 back in 2017), and they're so blown away at the difference that they end up ditching the Huffy and either getting something decent used or buying a new bike from me.

Here's a great example of an easy to ride, well built comfortable hybrid from a good brand. Exactly what you'd need.

https://dallas.craigslist.org/dal/bik/d/dallas-trek-navigator-10-recreational/7784626682.html