Tracktion T6 is now available for free, and is the full version free to use indefinitely.
"The world's best, fully featured, completely unlimited free DAW for all music creators
This is no ‘Lite’ version, we do not impose track limits, plugin limitations or other such constraints commonly found in other low cost offerings."
https://www.tracktion.com/products/t6-dawPC or Mac, 32-bit or 64-bit.
"Like all Tracktion DAW applications, T6 features an intuitive, single-screen interface. Input, waveform and mixer – including EQ, level, pan and plugins – are laid out from left-to-right. Simply drag-and-drop additional features and automation on any track as needed. Unlimited numbers of audio and MIDI tracks, combined with a professional feature set, allow you to compose, record, edit, mix and share your music with ease. Modest CPU requirements make T6 ideal for use on nearly any Mac, Windows or Linux computer."
Very intuitive to get started with, but is a bit different in the UI layout than the typical DAW. Probably quicker to get up and running than with Reaper, although Reaper can go deep if you want to build your own DAW.