Can I retire at 65 with 100k?

I'm curious, is it realistic to expect to retire at the age of 65 with a savings of 100,000 dollars in today's financial climate, especially considering the volatility of the stock market and the potential for inflation to erode the value of my nest egg? Would it be advisable to diversify my portfolio to include cryptocurrencies and other alternative investments in order to hedge against these risks and potentially increase my chances of achieving a comfortable retirement?