For me personally, the heart whispers in silent shock & awe, acknowledging the infinite power and unfathomable beauty of the Creator and I always wonder and say "who the ... are you!!!!!"
This awe-inspiring tapestry of existence, with its boundless complexity and harmonious order, compels my soul to bow in humble adoration before the Divine. It is a moment of transcendent realization and am forced to utter words to thank him, though I did not do anything in practical sense, yet I am praising and thanking him.
Going further, we should consider mutual human relations. Animals do a lot when taking care of their offspring; but when the offspring grow up they do not even recognize their parents. Such should not be the case in human life. Therefore, Allah has directed man regarding his parents as they should be given loving care because His mother bore him (in her womb) while she herself became weaker. Then she suckled and nourished him for a period of two years Whereas man's creation is dependent on God's Law, his nourishment is also no less due to parental care. So, he should be grateful to God as well as to his parents.
6:46: Think ye, if Allah took away your hearing and your sight, and sealed up your hearts, who - a god other than Allah - could restore them to you?" See how We explain the signs by various (symbols); yet they turn aside.
89:15+
Now, whenever a human being is tested by their Lord through ˹His˺ generosity and blessings, they boast, "My Lord has ˹deservedly˺ honoured me!
But when He tests them by limiting their provision, they protest, "My Lord has ˹undeservedly˺ humiliated me!"
Absolutely not! In fact, you are not ˹even˺ gracious to the orphan, nor do you urge one another to feed the poor.
And you devour ˹others'˺ inheritance greedily, and love wealth fervently.
27:40:
Said one who had knowledge from the Scripture, "I will bring it to you before your glance returns to you." And when [Solomon] saw it placed before him, he said, "This is from the favor of my Lord to test me whether I will be grateful or ungrateful. And whoever is grateful - his gratitude is only for [the benefit of] himself. And whoever is ungrateful - then indeed, my Lord is Free of need and Generous."
In short I believe being grateful and Thankful to almighty has many variations not necessarily only actions.