Hello,
before adding more and more sidewalks as separate ways, please note that they are already tagged on the street, for example https://www.openstreetmap.org/way/30091143 ("sidewalk=both"). There is no need to draw them as separate ways as long as they are not physically separated from the street. Draw them as separate ways can also lead to routing problems: https://www.openstreetmap.org/directions?engine=graphhopper_foot&route=50.768819%2C6.029437%3B50.768334%2C6.032878#map=19/50.768514/6.031682 (note the strange behaviour at the red marker).
Regards