everything in btc is the best thing to take advantage of this price, you may never see btc at 85k again

I have 1,400 Dollars, all in USDT, how would you build my portfolio? Example 30% $BTC , 20% $XRP etc... I am a novice in crypto, I made a trade in $BTC that earned me 300 BRL, but since the market is very volatile, I haven't done any more trades and sent everything to USDT, but I feel like I'm losing money in this standby, waiting for a new drop in BTC.