then there is a different way of marking this which depends on actual signs on the road. 
if there is no sign explicitly saying foot and bicycle and also no forbidding sign like "foot only" or "no bicycle" - then it usually mapped as highway=footway (aka, primary usage) + with bicycle=yes

if this way is explicitly designed for both foot and bicycle usage and has appropriate sign, only then we usually map it:
highway=path
bicycle=designated
foot=designated
segregated=yes/no
but even in this case if ways are separated - it's nicer to map them separately and have 1 footway and 1 cycleway.

in general, having only highway=path without extra clarifications is a bad idea is can be used only if actual status is unknown 

you can read more here:
https://wiki.openstreetmap.org/wiki/Tag:highway%3Dcycleway
https://wiki.openstreetmap.org/wiki/Tag:highway%3Dfootway

In any case, if you need a help, you are welcome to join our local community telegram group in telegram: https://t.me/OSM_Israel