It looks like YouTube TV does not carry SNY in your area. Screen capture of available sports channels in your area, if you have not gone through the exercise yourself.
If there's one live streaming service out there that may carry SNY whether one lives in market area or outside market area, it may be Fubo TV....BUT, the one glaring red flag of this service is they do not carry any of the ESPN channels.
I would only suggest if you're interested in any of these services, they usually have free trial periods. Try them out. I watch YouTube TV on a ROKU. I'm sure any smart TV's with apps will also work.