What to do after getting drained ?

For the first time in years one of my wallets got drained.
I thankfully didn't have a lot on it and it was really inactive in the last few years but I was wondering if I could save anything from it.

Basically any ETH I send gets drained instantly but NFTs aren't moving (they're basically all worth 0 so that makes sense lmao)
Im now wondering a few things :

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Can I figure out how the scammer got access to my wallet ?
Can I save NFTs with "sentimental value" ? (including the ens)
Does he have access to one of my devices or the seed phrase ?

Im trying to save what I can,make sure I don't do the same mistakes again and wipe the devices that need to be wiped

Here's the drained wallet address :
https://etherscan.io/address/0x4e4E611104cbc11c3490279fD14A3f38dbc61E5b

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Pretty inactive, I imagine I forgot to revoke access to a protocol I used a year+ ago that got compromised
I don't recall signing anything besides opensea/fnd/nftx transactions this year either

This is the draining wallet :
https://etherscan.io/address/0x127c1bc8e0ba4e7569a30235d7910d39bc4d8f58

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Thanks for the eventual help