What happens if I send everything in my wallet? (All UTXO's?) confirmed and unconfirmed ?
Basically send all my current bitcoin back to me in 1 transaction.
Will this help?
It depends: I have no experience with Umbrel, but in Bitcoin Core there's an option to "Spend unconfirmed change". If that's enabled, sending everything to yourself should work as CPFP. Depending on how many inputs you have, that may lead to a high fee, and could be bad for privacy since you're linking all your inputs together on-chain.
It would have to be via RBF though - CPFP won't work in this case since the parent transaction has been dropped by most nodes and therefore they don't know about the unconfirmed children which CPFP would use.
Fees dropped
a lot, so the transaction should be able to broadcast again. If fees continue to drop, it might even confirm on it's own.
Can you export the private key for bc1p2xlfklerd9cy7zywl8eqw7xahdcp87yfeaks76q06fnex2k2zqwquua7ld (your change address)? If it works, import it into another wallet and do RBF from there by sending the entire balance to your own address. Considering fees are pretty low now, 5 sat/vbyte is probably enough. Just make sure to enable Replace by Fee this time.
The address looks like a Taproot address though, so I'm not sure which wallet to recommend for this.
