the advice and input from everyone is very useful for me and also for everyone, so in conclusion bitcoin will not be affected its price even though the number of altcoins is increasing.
Yes, right. So you don't need to worry about the many altcoins that will be released later. Bitcoin runs on its own and so do altcoins but altcoin prices follow where bitcoin prices go.
The price of bitcoin will be affected if there is news that makes people in the market think that something is going to happen to bitcoin and they come to their own conclusions. But if they want to check the truth of the news, it will often give them the opportunity to adapt to the situation in the market.