although bitcoin price will get down in July/August, I am not too worry about this because as far as I remember, in July/August last year, the altcoin is getting an increase so high so no matter if bitcoin is down, we can get another profit from altcoin. and after the altcoin gets a party, then it's the time for bitcoin to show the power to increase because, in the last year, bitcoin start to increase after September and still increase until at the end of the year. so maybe it will repeat like this in this year.
Problem with this year is that every coin has huge resistance, because of mass growth in late 2017. Which certainly means that it wont happen again that fast, as coins needs to reach new aths with extreme resistance. That's why i don't expect bitcoin to reach 20k this year, maybe more like 10-15k max if we get very very luckey.
The only way for bitcoin to grow again is for world mass media to report on it, like it happened in late 2017 the mass media was constantly reporting on bitcoin new ath price...
you should not even compare bitcoin with other altcoins.
their resistances are very different. when bitcoin has a resistance it is because when all things are said and done it still has usages as a currency apart from being a speculation tool. but when it comes to altcoins the reason why they have resistance is because some bag holders think just because bitcoin has gone up from 0 to 20k their shitcoin can also do the same!
rising has little to do with the resistance too. we may see a reversal just because some fresh money comes in after some big news and price can shoot up to $20k (i don't think it is going to happen but just pointing out that resistance has nothing to do with it).