Hello.
The correct way to encode kids ride free is "fee:conditional=no @ age < 12". You can see this documented at https://wiki.openstreetmap.org/wiki/Key:fee:conditional
Also I don't think toll=yes is a valid tag here. Rather it should be fee=yes.
Please correct these issues.
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            Published using OSMCha: https://osmcha.org/changesets/151552200
            