So i sent about 20$ worth of BTC to a friends wallet with samourai yesterday since i wasn't able to pay for our pizza via bitpay with it because they apparently don't support their address format.

I paid 10 cents and it confirmed within like 10-20minutes. Im watching https://dedi.jochen-hoenicke.de/queue/#all and realise were at almost all time low tx fees.

While watching jochen hoenickes mempool website i realize i dont really understand it properly i think.

No i didn't search the whole web for an answer yet though i did some research on my behalf but im still not entirely sure how TX fees were able to drop this fast.

also has it something to do with segwit?

please let me know; looking forward to your opinion