The buds may be falling off because of a lack of humidity. You can try adding a humidity tray if you are not using one already. Also make sure the orchid is not near a draft or in the direct path of warm air from a heater. That could decrease the humidity and cause the buds to fall off. Besides humidity, it could be a problem with drastic temperature changes too.

I see that you have multiple keikis (baby plants). Are you leaving them on the plant for a specific reason? Also I am not sure what sticks you are referring to.

i did not know what the name was so i called sticks ,what i suppose to do with them Sorry i am new at this can you explain to me how to do it what suppose to do/

thank you

The little plants are called keikis, all of the keikis have roots and should be removed from the mother plant but maybe wait till spring to do this.
Some of the keikis have flowering stems and perhaps the mother plant does not have enough strength to support flowers.
Find some complete cultivation notes that are written for a climate similar to where you live in the USA. Google search for Phalaenopsis, growing or Phalaenopsis, cultivation.

Thank you for the explanation ,i am going to try in the spring
i need to read more about this .
thanks for the help

Remove the plantlets by trimming them off of the main flower stems, do not try to "pluck" them off. When they are all removed then cut the main stems as close to the mother plant as possible, if only for aesthetic reasons.

Also, cut the flower stems off of the plantlets as well.

As to the buds falling off - what Greencurls said.

what mix i should use for the plantlets ?

Use orchid bark.

After be mix with anything ,a chip place where to buy it