Suggestions:
Start with a high, broad view of the big location(s) and then a couple of progressively closer shots - to draw the viewer in.
Eliminate the 'straight-down' shots. More shots down at eye-level; hover the drone and do a slow pan of the water and bank. If possible, show people actually fishing and even better, catching.
Edit the shots for more consistent color & exposure. You can fold the drone and carry it 'hand-held' for the actual fishing shots. I shot a video using my Mavic Pro folded and carried it around to get the close-ups. Example: I shot and edited this for MTVs 'The Hills' cast & crew pool party in Beverly Hills a couple of years ago. Watch
Your audio seems a bit muted/muffled. Maybe a better mic/recorder? I grabbed your audio and did some vocal enhance and mastering to brighten it up - listen to it here >
If you're editing with Adobe Premiere Pro, there are excellent audio, color and other controls to make it polished.
End with a reverse of the opening; A high pull back to take the viewer back out.
Think of what the viewer/fisherman would want to see and give it to them, but leave them wanting more.
You can and will make videos that people love to watch and share!