I've been using this setup or one similar for several years now and it has worked out very well.

Hardware:

Clearstream TV antenna

Coax cable

Hauppage WinTV-dual HD USB Dual Tuner

Raspberry Pi 4 4GB

1 TB SSD connected via USB 3

HDMI cable

Software:

Libreelec OS

Kodi

TVheadend server

TVheadend client

Debrid addon media streamer

Any questions or comments you can reach me at minnix at minnix dot dev