Best advice so far in my opinion, the capital is too small to suggest going all in on bitcoin or any top cryptocurrency in the market currently. Now if you were to trade with decentralized exchange to try your luck with DeFi or NFT tokens, you would probably spend all your capital on fees which would not be ideal therefore I would also recommend using a centralized exchange like Binance.
On binance there are two coins that have caught my attention of recent, first is $COS (before I go on please don't consider my statement some sort of advertisment, shilling or financial advise). Contentos just entered the NFT industry, and they have lots of development ongoing, you can do more research and see if investing in it could be of interest to you. I'm quite positive some decent amount of return of investment could be made in couple of months.
Another coin of interest is $Lina, this project I'm just hearing of due to their listing on binance of recent, it has already retraced and currently trading at a very affordable price putting into consideration the quality of the project. If you do some research I'm quite sure you'll pick interest in the project just as I have, good luck.
I myself is looking for some good cheap altcoins also and i will surely have a look at both of these projects.
I just searched about them.
Contentos is available for $0.039. Details here https://www.coingecko.com/en/coins/contentos
Linear (LINA) is other one on binance at price of $0.13 Details here https://www.coingecko.com/en/coins/linear
OP and all others who have low investment amount can research about these two coins.
Note: There is another coins called Lina (https://www.coingecko.com/en/coins/lina). Don't get confused between the Lina and Linear (LINA) .