I wanted to check on how my Bitcoin was doing in my Electrum wallet. But now the entire application is gone. I'm on a Macbook Air M1. Does this mean my wallet, and the BTC in it, is gone?
Your funds only "disappear" from your wallet if there's an outgoing transaction record, that is someone moved your coins to another wallet. If, for some reason, you can't find the Electrum app on your system, it doesn't necessarily mean the funds are gone.
Check again, download, and install it againg following all security procedures. Restore your wallet using your wallet backup, which contains the 12-word recovery phrase. You should write this down, don't lose it, and protect it at all costs. Never write down the recovery phrase online.