Welcome to OSM! I have taken a look at your edits - traffic_sign=stop should only go where the traffic sign is, not on the highway. Otherwise, these edits look good to me.

Looks good! Thanks for your contribution.

Welcome to OSM! In general, name=* should not be used for descriptive names like "Drainage Easement" - it's totally fine for you to add things to the map without a name.

I have fixed this for you, you can see my edit here:
changeset/161444247

Welcome to OSM! highway=cycleway is probably not appropriate for single track paths, I would personally use highway=track - otherwise these changes look good.

The wiki has some documentation on tagging for mountain biking, in general - it's a great place to start.
osm.wiki/Mountain_biking

I have reviewed your edits and it looks good to me. Note that surface=concrete:plates is quite a rare thing compared to surface=concrete, see the discussion here:
https://community.openstreetmap.org/t/surface-concrete-vs-concrete-plates/122298

What does the name "C.M.F" mean?

No worries - last night I readded the ways and made sure they were all tagged as private. Hope this helps solve your problem.

Nice work, thanks!

By source, I just mean a simple explanation of how you found the information - in this case you could just put "local knowledge" or "survey" to indicate that you saw it firsthand.

Welcome to OSM. You can press "Q" to square objects when you add them.
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Published using OSMCha: https://osmcha.org/changesets/161086067

Welcome to OSM! Please don't delete existing ways, even if they are on private property - it's better to add the appropriate access=private tags, that way nobody else will accidentally readd them without the important local knowledge you have.

Welcome to OSM! I looked at both of your edits and they look good to me. Please remember to add a source to your changeset to clarify how you found these ALPRs, since they generally aren't visible from aerial imagery.

are these permanent or part of some temporary construction?

what source did you use to locate these ALPRs?

Hello, in this edit you replaced the traffic_signals information with the ALPR information - this is not correct. Please make a new node for the ALPR which is at the physical location, not directly on top of the roadway.

There is a dog park at the car dealership? Is it open to the public?
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Published using OSMCha: https://osmcha.org/changesets/161149806

Are you adding these dog parks on behalf of a company?

Welcome to OSM! Please place the man_made=surveillance node at the physical location of the camera, not on the road itself.

I mapped these as access=private the last time I walked these trails, because there is a sign at the trailhead that says it's for HOA members/residents only. Do you think that is still the case?

Welcome to OSM! This edit looks good, but name=* tag should not be used for address data. I have fixed this for. Happy mapping!