There comes a time and many times thereafter in a MDrs "career"...
When frustration and irritation collide with hopes and dreams.
In other words...
Smashing a detector across a tree may enter your mind...

But rest assured this will pass...
I tell other MDrs that are relatively "newer" to Mding is... Patience... Planning... and determination are keys to the kingdom of finds.
In your case Dave beings your are in the Ft Myers area your "areas" and "planning" perhaps "limit" you to some degree...
I actually am quite familiar with the Myers history... as well as surrounding areas...
Back in the 70's and 80's I know MANY detectorists wailed that area...
Sheesh you even had a VERY successful famous treasure hunter as neighbor who recently passed there.
He retired there and hobbied that area for years as well.
Mding is like fishing... Its all in the "spot"... and situation.
Other factors also always play a part as well... unlike fishing... the detector used and its settings are also a MAJOR part in this...
In fishing the pole matters... but not as much as "your pole" does like detecting.
Beach detecting is your best bet in your area Dave.
Your "general" area is rich in history and has been inhabited forever and is older than St. Augustine...
Your "spots" VIA your finds appear to be "mid century dry spots"...
These produce the types of finds you have posted thus far.
Now not saying you will not find ... OR have not found "good stuff"... you are just finding "typical" MD stuff.
These items you are finding are perfect actually...
This means your detector is at least responsive to metallic items.
WHICH... is a start.
Now...
You just have to have that coil over THE spots.
In order for that to happen...
"think outside the box" mentality will HAVE to happen... AND a little "luck" of the spirit of yester years.
I have had my eyes water from frustration many times in my early years.
But then...
It happens...

....
Bam ya hit.