For on chain bitcoin all you need is the seed phrase(derivation path and/or adress type would be helpful too). For lightning channels you need a bit more. Do you remember saving a file called a secure channel backup or having a .scb file extension.

I'm not familiar with umbrel so much but it looks like they have an automatic backup feature that you could restore funds with a new umbrel setup and your 24 word backup. This video may help you. https://x.com/umbrel/status/1562099972547690501