For the new people in crypto like you, let me list some real stable coins.
Decred
Binance Coin
Ravencoin
Tezos
Ravencoin
Metaverse ETP
Tether
TrueUSD
Agree on that. For now only Tether and TrueUSD are stable. The others are still going up or down with BTC. With the current market BTC up does not mean, alts are going up to, but mostly alts will go down, when BTC goes down. Strange market. If you want to play safe, go with Tether and TrueUSD.