Soup
My own term for this type of water is "soup". To me it looks like soup. And also because there are many components, algae, dead organic stuff and bacteria. The good news it will be fairly easy to make a big improvement.
1.
Accept the pond as it is. It will change and may improve some. Many people do go this route, I call these Wildlife Ponds. In these the fish aren't fed and you just take what nature provides. Can be good, can be bad, but it's always interesting to these type of owners.
2. Remove everything in the pond down to the liner.
Replace all the rock with new rock. Basically start over. It resets the honeymoon clock.
3.
Fill in the pond. Many, many people do this. Like you, unable to find good info and having been told dozens of myths they just get fed up.
4.
Get really skeptical. You can improve your pond know how by a factor of 100 by doing one thing, not believing a single thing you've ever heard about ponds. There is good info, but this is a numbers thing. If you currently know a 100 things about ponds and 99 are myths and 1 is right you're better off disbelieving all 100. Because currently you have no way to pick out that single nugget.
Becoming skeptical is key. Without that there will be an endless flow of myths and crank ideas. Being skeptical means you ask people who offer suggestions to explain why and how it works. Most common response, and a little defensive, "well I use it and my pond is perfectly clean". To sway you they will hype how clean it is saying crazy stuff like "cleaner than my drinking water". It becomes obvious, when you probe even a little, that they're only repeating something they've heard and really have no idea what's going on.
Need more info
Sorry if you already posted this stuff:
Can you post some wide shots of your pond?
Do have a skimmer? I assume not.
No filters of any kind right?
Size of your pump(s)?
Waterfall or stream? I assume not.
Then I can post some pretty easy improvements along with references to how these were tested and expected results.
Yep, I've got soup...
No skimmer, apparently No filter and the 1 pump is 700gph w/UV Light, No waterfall nor stream either.
If a new pump & filter and building up the sides to lower run off from the surrounds doesn't clear it up, then well just go the Wildlife Pond route. It seems to have worked well thus far, as long as I don't want clear water
AND we LOVE it so Backfilling is out of the question.
I'm VERY Skeptical, that's why I joined your forum
I'll post a couple of wide shots for you shortly......
Thanks to you and everyone who is helping to educate me! Several have posted that I came to the right place, and indeed it appears I have.