You thought right. I would say if you can invest in Bitcoin now then you will be better off. Bitcoin price will increase in coming days so seize the time now without delay. Now is the right time to invest in Bitcoin. I think. But as the price of Bitcoin increases, so will the price of all coins. So it will be better if other coins can be bought along with Bitcoin.
Invest wisely, you don't need FOMO because prices are currently low. You don't have to feel left out to invest because all decisions must be thought out wisely so you shouldn't ignore the risks.
Investment now or later does not matter because the actual price of bitcoin will still fluctuate. It's just that it might be good to think that now is a good time to buy and accumulate bitcoin as the price is still at 70% below ATH. I will be placing more bitcoin during this bearishness in the portfolio, this will provide many opportunities to take profits when the market recovers.