Question about gas amounts

Hey guys, I have a question about eth gas. I always thought the price was fixed and only depended on how busy the network currently is.

But yesterday I had to claim an airdrop, list an NFT for sale, and also deposit a token for staking. These three actions were within a few minutes timespan.

The airdrop cost me like $20. The NFT listing cost me $55 or such. Then I had to perform one more action I don’t remember what was for, but this cost $20 roughly. Finally, to deposit for staking costs $160 in gas.

I didn’t want to spend that much so I kept checking during the day yesterday and also right now when gas is usually cheap. However it’s still close to $150.

Does gas price change depending on what action you want to perform? Since staking is sooo much more expensive than for example claiming my airdrop