how do you remove noise after jack_capture?

I'm debian user, and use for record my vocals jack\_capture with laptop's microphone and wired/bluetooth headphones (jack\_connect system:playback\_1 system:capture\_1;jack\_connect system:playback\_2 system:capture\_2 (beware! if u want record same as me, u must already have some headphones connected to ur laptop, bcz else u can get terrible sound)

also same thing for my guitar's recording, I connect GP-100 Valeton guitar preprocessor to my laptop's microphone and record via jack\_capture.

So, what the best tool/script/lv2/vst plugin for remove noise?

I only know sox' rmnoise, also maybe just cut noise via ffmpeg's filters.

Also maybe off-topic, but - is writing own C/C++ program for noise removing have profit for get audio file without noise?