You can recover this wallet and found the missing 4 words from your backup seed phrase the only problem is I think it will take months or years depending on the PC specs.
If you have a GPU rig you can speed up the process.


There are two tools that I know that you can use to brute force missing 4 words BTCrecovery and FinderOuter Bitcoin recovery tool.
You can find the source of BTCrecovery here https://github.com/gurnec/btcrecover
And FinderOuter here https://bitcointalk.org/index.php?topic=5214021.0