I've tried connecting my Ledger to Electrum but I'm not seeing the address there. Was wondering if anyone else has run into this issue or has any ideas on how I can access my BTC?
If you've connected the Ledger directly to Electrum and created a "standard" wallet with the "Use a Hardware Device" option and it found nothing... then you might have to try experimenting with various derivation paths to try and find it.
You can either create wallets in Electrum using your 24 word seed ("standard wallet" -> "I already have a seed" and tick "BIP39 seed" under "Options")... or you can experiment using an offline version of https://iancoleman.io/bip39/
Creating individual wallets in Electrum is relatively time consuming... but arguably more secure than using Ian Coleman's tool... however Ian Coleman's tool allows you to quickly and easily modify the derivation path and check lots of addresses at the same time.
Whichever option you select, I'd suggest doing it on an offline computer... and after you've finished, consider your seed as being compromised... you should recover the funds to a new wallet... then reset your ledger device, create a new 24 word seed and then move the coins to an address on the newly configured Ledger.