just to record, luckily your preamp has 3 sets of outputs (1 pr xlr, 2 pr rca labeled se single ended). I didn’t read the manual, presumably all active, (possible/perhaps a menu setting activates/deactivates them)
you could use one of the rca out to the cassette deck in, and use any line level in the freya from the cassette deck’s out which is adjustable line level.
gotta watch your volume controls, because both the freya’s output and cassette deck’s input volumes would be in line, as well as the cassette deck’s output volume when listening to it.
experiment until you find a strong enough but not too strong setting out of the freya. you would need to do preliminary test to select recording level on the cassette deck for each LP, possibly a particular track would benefit from individual adjustment, especially if a compilation LP, perhaps record each track separately if you need for best results.
test, record/pause: watch cassette deck meters, then start over: freya using it’s input from the phono; freya out to the cassette deck
now the question: other freya xlr or rca out, or freya xlr out: active, listening? you would be listening to the cartridge/phono, hearing what the cassette deck was receiving; not listening to the tape as a proper tape monitor loop allows you to do.
recording level: you want as strong a signal as the tape type can handle, even occasional momentary dips into the red, but not too strong that the signal ends up distorted. practice, too low a signal, playing it too safe results in more tape noise. Find locations on the LP of portions of strong dynamics, check/set it there.