i have spark and gas, but its been sitting for like a year.5, new sparkplug and oil, cleaned out the carb and flushed the tank. when i kick it over it feel too loose(does not start), like theres no compression. could it be the seals??

you may wanna give it a compression test, but i wouldnt see why it wouldnt have compression now if it did when it was parked

If your 250R does not like you....then maybe it will like me, I will treat her good!!!!! J?K

Do a compression check.