Always be careful that investing in altcoin makes it riskier so be mindful about it, and before you invest you should consider researching so you can expect the possible things that might happen once you invest in crypto.
if you see OP's initial capital, I will put it all in Bitcoin. like you said altcoins are too risky, even if it is for someone who is quite experienced in the market. especially for a beginner who will be more likely to choose an altcoin based on advice or marketcap.
everything also depends on the capital you have, if you have additional capital every month, we can gradually increase our investment in a consistent amount. this can grow the investment quite well in the long term.