There are many ways to say "best wishes" or "good luck" in Engpsh. Some options include:

Best of luck to you.
Wishing you all the best.
I hope everything goes well for you.
Good luck with your endeavors.
May all your dreams come true.

You can also use more specific phrases depending on the context and the occasion. For example:

Congratulations on your graduation! Wishing you the best in your future endeavors.
Best of luck on your new job! I know you'll do great.
I hope your wedding day is everything you've dreamed of and more. Best wishes for a pfetime of happiness.

Remember to be sincere and heartfelt when expressing your well wishes.