1. yes, now is the right time to invest in cryptocurrency, because market conditions have not experienced a bullrun
Market condition is now not stable and not so higher therefore one who will invest even this time then he will be profitable in Bull season as 2024 will be that year in which wishes of all holders will come true. Make good decisions of coins and don't be too calm in buying coins that you skip the chance of achievement in coming months.
2. bear market situation will not be like 2018, because you will never see cryptocurrency prices as cheap as in 2018, then in the next 3-5 years, you will also not see cryptocurrency prices (especially Bitcoin) as cheap as this year (2023).
Market condition cannot be examined in advance so we cannot say that the condition will be same as that of 2018 or worse than it or perhaps better than it. Actually Market condition are invisible therefore assumption can be made but reality is hidden for everyone. We assume that future will be bright for all bitcoin holders because now bitcoin price is much more better than past.