echo in tinny audio

I’m wondering if anyone knows how to best get rid of a slight echo in vocal audio. I’m trying to improve the way the voice sounds in this, but there is a slight reverberation or echo around lower tones especially. I’ve attached two clips, sample1 is with no effects and sample2 is with compression, some equalization (bass cut, some treble amped) and a low-pass filter. If you have any ideas, I’ll be grateful! Thanks.

An expander can attenuate the room reverb when the person is not speaking …

This is an example, (slight reverb), where a de-reverb plugin may of use, but they are costly, (so try before you buy).