Remove room noise from poorly recorded speeches

I’m transferring family occasions speeches from cassette tapes from the 1980s to mp3. Many of the speeches can hardly be heard because the cassette recorder is placed too long from the individual speakers. I have with success set the input volume to maximum during the recording to Audacity to increase the audibility, but the “room noise” is even more bad than on the cassette tapes. Is there anyone with good advices for improvement? I’ve tried different combinations of Audacity recording types, effects like bass and treble, equalization, classic filters, and noise reduction, but with no improvements so far. :frowning:

Sounds like reverberation is the problem.
There are De-reverb plug-in$, but IMO they’re only useful to dry-up slight reverb.