Psalms 78:22

²⁰ When He struck the rock, water gushed out and torrents raged. But can He also give bread or supply His people with meat?”

²¹ Therefore the LORD heard and was filled with wrath; so a fire was kindled against Jacob, and His anger flared against Israel,

because they did not believe God or rely on His salvation.

²³ Yet He commanded the clouds above and opened the doors of the heavens.

²⁴ He rained down manna for them to eat; He gave them grain from heaven.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: because they did not believe God or rely on His salvation.
KJV: Because they believed not in God, and trusted not in his salvation:
WEB: because they didn’t believe in God, and didn’t trust in his salvation.
ASV: Because they believed not in God, And trusted not in his salvation.
DARBY: Because they believed not in God, and confided not in his salvation;
BLB: because they did not have faith in God, and they did not trust in His salvation.

Hebrews 3:18–19
And to whom did He swear that they would never enter His rest? Was it not to those who disobeyed?
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Jude 1:5
Although you are fully aware of this, I want to remind you that after Jesus had delivered His people out of the land of Egypt, He destroyed those who did not believe.
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Deuteronomy 1:32
But in spite of all this, you did not trust the LORD your God,
Read in context
Hebrews 11:6
And without faith it is impossible to please God, because anyone who approaches Him must believe that He exists and that He rewards those who earnestly seek Him.
Read in context
Hebrews 3:12
See to it, brothers, that none of you has a wicked heart of unbelief that turns away from the living God.
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Isaiah 7:9
The head of Ephraim is Samaria, and the head of Samaria is the son of Remaliah. If you do not stand firm in your faith, then you will not stand at all.’”
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Psalms 106:24
They despised the pleasant land; they did not believe His promise.
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1 John 5:10
Whoever believes in the Son of God has this testimony within him; whoever does not believe God has made Him out to be a liar, because he has not believed in the testimony that God has given about His Son.
Read in context