There are multiple ways to unfreeze a Nintendo Switch, including closing and re-opening a frozen game or resetting the console.
There are two ways to reset a Nintendo Switch: a soft reset, which only takes a few seconds, or a factory reset, which will wipe all of your data.
Nintendo Switch emulator Kenji-NX just dropped a big update with a new 'Turbo Mode' and support for Hollow Knight: Silksong.
Remedy has released Control Ultimate Edition update 1.30, which includes support for HDR and PSSR. Read the full patch notes here.