Bitcoin is still under $30k and still above $20k, of course it's not too late,
if you are still in doubt, maybe you can buy bitcoins or altcoins by accumulation,
so that the risk is smaller and of course make sure you have to divide your capital and don't buy 100% of bitcoins or altcoins .
You've made a great suggestion that Bitcoin is still being offered at a very good price. While all other coins in the market except Bitcoin are getting very low price. For those who have not yet entered the crypto currency market, this is a great opportunity to enter.
The prices of altcoins in the market have decreased significantly compared to Bitcoin. I also like your suggestion of diversifying your capital because that way you can minimize your risks. Investing in one or two token is always a risk to your capital. You should always invest in other altcoins along with Bitcoin so you can minimize your loss rate and improve your profit rate.