I think this is a conjunction of things. First was BTC halving (new BTC supplies decreased by half).
Second is a peak of incoming transactions.
and finally third, miners leaving their job because of fewer rewards in fees.
I cannot see other things…
Discussion
Actually I can think of one more thing… Runes.
They started a way of doing smart contracts much like Ethereum, but now within BTC Blockchain. It was released with the Halving block.
And people are start to mint their first nft memes right now… this also explains these peak of transactions.