Put out favorite photographs and light a candle before them. Intentionally remember those people not present. Tell fun stories about them. Say a prayer for them at a meal. Bring them into the celebration.
Holidays often bring nostalgia.
They have their ups and downs. This is normal. Don't look for fulfillment of all of your desires. But, also, don't get caught up in unrealistic expectation and comparison. Accept and enjoy the present moment.