I added these two paths based on RouteYou user input, but couldn't see anything on satellite images due to a forest being in the way. Can someone with local knowledge refine these paths a bit more?

Can you or can't you walk, cycle or horseride in this region? My search on the internet couldn't answer this question and most of the tracks/paths haven't been changed in the past couple of years.

There's a BE:C3 sign here according to 10+ year old street level imagery and it's also present in the traffic_sign tag. Can someone with local knowledge confirm this if it's still there and add the relevant other tags?
osm.wiki/Road_signs_in_Belgium/C_Prohibitory_signs

The radknoten from Landkreis Leer are added here in Uplengen, but the trajectories between the radknoten aren't. Can someone with local knowledge add them here? Then this gap in OSM is filled.

Very recently a gold mine has been constructed here, resulting in a deviation of the existing road. The satellite imagery is as of yet (25/09/2024) not updated so only the road has been changed based on local knowledge. If the imagery is updated, the adding of the other structures to OSM can be started

Some of these roads have both access=private and foot=yes, while others only have access=private. The foot=yes tags date from 5 years ago. Can anyone with local knowledge change these if they are wrong? Because there seems to be no logic as to which ones have both and which ones have only one of these tags.

A RouteYou user claims this road is inaccesible for cars and motors. Street level imagery however doesn't seem top prove this. Can anyone with local knowledge confirm that this is true or not?

Are these roadworks still taking place or are they already finished?