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.
dont ever thinking we will gain huge profits only in a night. we will passed hard journey while holding our assets and even it make us really hard to decided sell or hold it. there are alot good project still in progress development and have potency to rise more than 2x in near future. for safe investment assets bnb and solana was good choice beside btc and ethereum.