Try booking at Galveston Island State Park. Yes that would be Texas. I believe you can choose between bay side or beach side.
There are others. Goose Island SP near Fulton/Rockport should be good.
Sea Rim State Park south of Port Arthur has a few camp spots.
Louisiana would be a "no-go" from what I've seen around Lake Charles. Devastated.
Maybe something close to New Orleans. Bayou Segnette SP is just across the river from New Orleans. Good Food!! Watch "New Orleans Kitchen Queens" on PBS for some ideas on places to eat.
https://tpwd.texas.gov/state-parks/
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