maybe using that old cassete deck which is collecting dust like "effect" insert on already DAW-ed guitars is nice idea (if nothing better is present -2 track,4 track whutever )
that fizz is mostly high freq metallic spiky transients and tape sets em "back" ,so overall freq balance seems to be more relaxed.
not enuff high freq detal after that ? No prob ,thats whut high shelf eq is for eh .
If there's no way to monitor tape sound from playback head ,maybe adding timing spike at the start of each section could speed up nudging that old-skooled track back where it should be .
playing bit with input level wouldnt hurt either ...
some synth sounds like this too