Hi,
https://wiki.openstreetmap.org/wiki/Tag:leisure%3Dhorse_riding says:
"Use this tag only once for the whole facility, don't use it multiple times on different objects belonging to it ...",
but you have tagged 4 different areas with this tag which probably all belong to the same riding centre / riding stables. So wouldn't it be better to move the tag leisure=horse_riding to
https://www.openstreetmap.org/way/1150667794 which contains all these 4 areas? If these smaller areas are riding arenas (or round pens) they should be tagged leisure=pitch + sport=equestrian.