About the Ryanair winter schedule. The plan for EMA this winter just gone was to operate a part-time base between Friday and Monday only, but with the full lockdown even that didn't happen.
The same still applies for what's currently available till Jan'22 (if you look at the few flights available Tuesday to Thursday over the winter they're all non-based aircraft). I suspect this is only ever a temporary situation with reduced demand/crewing, so I'd imagine this is being reviewed for Jan'22 onwards, hence no flights currently available to book beyond then.