The fact that cryptocurrencies are falling in price is something normal in every speculative market, sometimes there is a bearish style trend as well as bullish ones, they can also often obey emotions, such as panic, it is obvious that a fundamental without a doubt some is war, and this causes panic, which means that the market in general can go down, and if the BTC goes down in price this means that the altcoins will too, so if you couldn't take usdt or some stablecoin on time and you see that the amount in fiat is getting lower, my advice is to stay somewhat calm and you can wait as long as necessary until the market recovers, so you will not lose.
Indeed, and while waiting for the bearish season to be over, much better to take advantage the dip and buy additional coins. We know the best time to accumulate is during correction, hence if the price starts to recover, you'll be a gainer. This is one of the best thing to do when the market is bloody and not the suggestion of op, unless if you have what it takes to be a developer, has a good plan and you're not going to scam other people by creating a trash project.