I would install bitcoin-core package from flatpak or snap as a service, let it download the blockchain. Then create a separate user account (without an enceypted home drive) and download/compile/whatever CLN and run it as that user. Use cron to autostart CLN from boot even when the user isn't logged in, this is a poor-man's service (so you don't need to learn systemd). Configure CLN per instructions and connect it to your local bitcoin instance. This may involve putting a long random password in the bitcoin config protecting its control ports. CLN will also need this password to access the bitcoin core daemon. Now you have a basic install, and CLN will create an internal bitcoin wallet. Keep the seed phrase for this secure and backed up with multiple copies on paper and in a safe. This is for your lightning hot wallet, and it resides in CLN (not bitcoin-core). Now you will need to add services to your PC to serve up interfaces to your wallet like LNBits. One simple mobile interface is Zeus. There are also web-server based ones like RTL (ride the lightning). You can also rely on the CLN command line. This is a high-level recommendation and may include errors. ChatGPT can also be a good resource for walking you through various steps. 

 Thanks for the recommendation! I have Bitcoin Core running and the Blockchain is downloading. 

I'll dig into the CLN.