The major thing that pleases God the most is our good and sincere heart and also how we help the people who doesn't have. The Bible shows that God is not impressed by outward actions alone, but by a heart that is humble, faithful, and fully devoted to Him. When we trust God and live according to His commandments, we bring Him joy.
Another thing that pleases God is when we love others genuinely and live in righteousness. God is pleased when we show kindness, forgive others, and walk in truth. Living a life that reflects His love and holiness is more important to Him than religious rituals without meaning.
Mark 12:33 (KJV)
“And to love him with all the heart, and with all the understanding, and with all the soul, and with all the strength, and to love his neighbour as himself, is more than all whole burnt offerings and sacrifices.”