If you are familiar with Solana, then I think you should invest in it. Solana is making a good move in the market, and added to that, Solana is being used in different projects, or Solana has projects that are becoming more expensive, and yeah, Solana is, I think, one of the safest alt coins to invest in, as it has been proven. You could also do ETH, which is, I can say, the second-highest price in crypto currency. It always follows when bitcoin is either moving up or down, but of course, be careful with trading or investing in altcoins as they are subject to dips as the investors are only thinking about selling their stocks as they see the price of their altcoins increase. It's okay to try and trade altcoins; just stay away from memes and shitcoins, although they can be profitable at times, but not for trading.
I also read elsewhere how many people are talking about Solana and predicting that this will be one that has potential, I don't really understand because I don't follow it, but for trading at times like this it is quite suitable because the market will move quickly both up and down because Bitcoin is currently bullish, especially after the halving, but for investment, meaning long-term, it doesn't seem appropriate because after Bitcoin enters a bearish period, altcoins, including Solana, will experience even worse things.
Meanwhile, memecoin will be very profitable for early investors and you have to play it safe by always taking profits quickly because you don't know what will happen to memecoin in the next few months.