If you are looking for an obscure token and would likely rise in future than the chance of you losing your invsetment is very high, the current market is a good opportunity to buy the dip especially the top 10 coins, not all of them would make the next leap but they have a better chance than the unknowns and untested project. I believe BTC will still hit $50k but don't know when
I agree with you, market's been behaving bad lately and investing in newly promoted coins may give anyone more losses than the tested one will.
So yes, better to invest BTC for now.