If you're "Not familiar" with specific problems highlighted by notes then it's best they're left alone.

Hi
node/6135938648/history
Why have you revalued the network tags of some railway stations from Overground to National Rail.

https://en.wikipedia.org/wiki/London_Overground#Stations

https://en.wikipedia.org/wiki/Category:Railway_stations_served_by_London_Overground

Hi
To check, are you sure about the bin?
The one on the bridge & one next to the path are already tagged
osm.org/edit?editor=id#map=19/51.37576/-2.38272

Hi
node/3648408660
There is already a railway station.

As it was previously...
https://en.wikipedia.org/wiki/Chalk_Farm_tube_station

...And the fare_zone tag?

Hi
https://osmlab.github.io/osm-deep-history/#/node/3637436408

What is the reason for you removing the subway tag?

Hi
https://osmlab.github.io/osm-deep-history/#/node/34037750
What is the reason for amending the operator & removing the network tags?

Hi
https://osmlab.github.io/osm-deep-history/#/node/5585857405
What is the reason you amended the network to London Overground?

Hi
node/3663368461
What is the reason you've amended the network of this London underground station to National Rail?

Hi
There is already a railway station.

node/6666423298

node/11869553283

No need. Different objects can have the same name (train buildings get rendered with a different font) but features should only have one tag.

osm.wiki/One_feature,_one_OSM_element

Hi
way/293413558
There is already a railwaystation.

Hi
way/1229471487

This isn't a building. Could you please amend & check if you've made similar mistakes elsewhere.

Hi
way/1275310014
Could you check the golf hole's direction for for edits. They're meant to go from the tee to the hole.

Hi
way/1234647369
There can't be a tunnel & a ridge. Unsure from imagery which it is.

Hi
way/243668371#map=19/52.52443/-2.04883

There is already a railway=station node. This should be building=strain_station.

FYI
I've done some further investigations & had a reply from the Chair of the local resident's association:

"The pathway was opened as part of the Somerset Place section 106 agreement. My predecessor ensured it was enacted and so as far as I know it is a permanent right of way."

I'll be adding access tags to the gates.

Photo of said gate:
https://snipboard.io/I2M6cx.jpg

Hi
Has the locked gate been removed? If not, could you add the appropriate access restriction tags please.