First thing please answer a few simple questions.
What state do you live in and tell us what type of water is available for you.
Do you want to fish small rivers, ponds, small to mid sized lakes or big lakes?
slonezp is correct, a deeper Vee boat may be best for you from a safety point of view, especially if you are going to fish bigger and faster water. He is a great source of knowledge on the Lund boats. The downside to a Lund is finding one in your budget, however there are other good deep v boats that may be available cheaper, perhaps a good Alumacraft, Lowe, G3 etc even an old Grumman deep V as my friend Kris found a few years ago.
Now if you want to fish slower moving water ( read safer to handle) such as small to mid sized lakes, slower running rivers ponds, reservoirs etc, than my suggestion is to look for a 17to 18 foot aluminum bass boat. These will be easier to find in your price range. I would stay away from fiberglass as your first real boat. A 17 foot aluminum with a 40 to 75 is an ideal first boat. These boats will be called a "mod V" boat and the 17 to 19 foot boats will have more beam and stability. Obviously Tracker is the most recognized brand, but Lowe, Alumacraft, G3, and many other manufacturers make these boats. Look for boats like these from Craigslist.
https://allentown.craigslist.org/boa/d/bass-boat/6429356149.html
https://washingtondc.craigslist.org/doc/boa/d/bass-tracker-tx17-tournament/6421940849.html
https://washingtondc.craigslist.org/nva/boa/d/power-boat-with-trailer/6421936258.html
My wife and I have fished out of tiny little 12 foot jon boats on reservoirs, several 15 and 17 foot aluminum mod v aluminum bass boats and several fiberglass rockets ships. I have caught as many fish out of our 4 different aluminum bass boats as I have out of the fancy fiberglass, however the maintenance on the fiberglass is much more involved.
Here is what we currently have. It is a 17 1/2 foot Lowe bass boat. It is now powered by a 75 hp Mercury outboard. It runs in the high 30's to low 40's, is quite stable and we have fished on reservoirs, big 60 mile long lakes and fast moving tidal rivers including the Chesapeake Bay.