As per the current market situation, many good coins are falling due to dot, cake and many other reasons. I would suggest buy cake, sol, and such coins for at least 5k amount, and soon those coins will return high profit margin
You want to invest in long term but you expect to get your return very "Soon", i think you better to do trading instead of investing. Don't think you can get x10 or even more just in one over night. If im being you with that amount i will all in into BNB and staking my coins in Binance.