this year is not a bitcoin year, bitcoin has a pretty much setback in terms of price but not just bitcoin that has setbacks but almost all big coins that have their own market,
I think the biggest reason for this setback is that I think because of the rise of ico scams, and I think it would be nice if there was a legal entity coordinating each ico so that there would be no more scam that was unsettling to investors,

none of the foreigners predict when bullrun will occur but market conditions are very dependent on supply and demand, crypto is also very sensitive to the news that is blowing, and also currently crypto is still getting opposition from some countries that have not legalized crypto

the best coin for investment in my opinion is bitcoin, because bitcoin has shown its quality as a promising investment even though lately bitcoin prices tend to be stable and have not shown significant movement

Bear market is very dependent on the market capitalization holder, and depending on supply and demand, if the supply is low and demand is high, of course it will automatically create a bear market,

I think holding back is the best solution right now because the market is struggling in the red zone, which when we enter means we are ready to lose some of our money,
but if you want to enter the market you must select what you will invest

indeed at this time altcoin prices look stuck, in my opinion there are many factors that cause the price to be stuck among those you mentioned above, but I disagree if you say the enthusiasm of investors is decreasing, in my opinion a lot of funds from investors are still stuck on ico or the tokens they previously invested, so that the enthusiasm of the investors seemed to decrease

I am one of those who believe in crypto, and I agree with you Crypto is a long journey that requires us to learn and analyze continuously even every day,
crypto is the future and in my opinion it cannot be denied