Hello, i do music production in my spare time as well. anyways, for free DAW's i suggest either Tracktion Waveform free or Cakewalk.
Personally i've been using Waveform free for ~4 months now. it's been nothing but great. Oh and it works on linux (w/o wine). Now yes there is a paid version but afaik it's just for additional features and plugins. It should be fine as there are free alternative plugins scattered around the webz anyways. Try the free version and if you like it then you can upgrade easily.
If the idea of seperated version doesn't interest you then maybe try Cakewalk. The full package is 100% free. People been saying it's the best free DAW on the market. Big downside to it is that you would have to install BandLab Manager for it to work making updating a huge pain... Well coming from experience at least.
Bonus: There is LMMS. I have never tried it yet but i heard it's good yet have a steep learning curve. so yeah.