It’s really very easy, just google whitetail deer preserve and go “hunt” there and shoot a cull deer that’s 150in. Jk
You’re starting off rifle hunting deer in louisiana which is probably the hardest thing to kill in North America other than turkeys in louisiana.
As others have said if you do not have someone to help you that you know (coworkers,friends , fantasie football team members )
Then it’s gonna be a long learning curve .
If you have the means look at trying to get into a deer lease there are FB groups dedicated to hunting in louisiana and they post they are looking for members every year 1k-1500k can get you into a club that while it may not be a prime place you can kill a deer in.
If you’re dead set and can’t then look at the wmas you can or will hunt , look for pockets of the thickets nastiest places on it. Places you can’t see farther than 50yd get there and jack up in a tree with a climber focus on pinch points or areas where a small creek of thick stuff is wedged between some big uncut timber make sure you know that the wind is not blowing your scent to the area you Expext a deer to be. Public land areas are very productive mid day because deer get bumped by people leaving and coming in.
Develop a routine everything from when and how you pack your bag or stand to how you set up and place your gun and then load it and always make sure your scope is on the lowest power. If you see a deer plan on shooting it don’t check it with binos I’m not saying to use you scope for observation but when it’s a deer point your gun at the first clearing you have in front of it and be ready to either bleat or shoot it walking . You probably will only get one or two spots to shoot a deer in the thick stuff don’t waste them.