I want to invest in crypto

Hi everyone,

I invested like 500$ in crypto a few years ago. On the advice of a friend i mixed some ETH, Bitcoin, Solana and some Tezos. It’s now almost up 3x.

I have now a good job, and I am able to invest more maybe around 10k.

My questions are :

how should I invest ? (I have a Binance Account but I don’t know if I should trust the app for 10k.)

In which crypto should I invest ? Should I diversifie or just stay with Bitcoin and ETH?

Any other advice you might think of could be really helpful.

Thanks