At least 2 P2P marketplaces are down. Localbitcoins and now Paxful.
Were can I still find trustable BTC marketplaces which also work with other currencies?
It's best to use decentralized exchange Bisq (install it on your computer) for trading Bitcoin with fiat currencies and few main altcoins.
If you want to use something with similar style like Localbitcoins/Paxful, you can try using Agora Desk or LocalMonero.
One more interesting option for p2p trading without kyc on mobile devices is called Peach Bitcoin, and I wrote about it before:
https://bitcointalk.org/index.php?topic=5444162.0https://peachbitcoin.com/PS
I am not supporting any services I mentioned above.
Do your own research.