With some coins going up 50% or even l00% in a day or few days or in a week... any reason why bitcoin doesn't do that almost ever? Look at binance coin and many of those other coins that are literally doubling in a week. Now the btc dominance is going so low. And even when btc goes up... you don't ever see it going up that much percent in a week. I mean... its rare to see bitcoin say go up 50% in a week yet tons of altcoins do it.
So basically you are asking that why altcoins grow 50-100% within few days whereas Bitcoin grow 10-12% comparitavely? Making comparison among Bitcoin and other altcoins in the market is not at all valid because of huge difference between them.
Bitcoin Price is trading above $55k at this time and market cap has already crossed $1 trillion and it's not at all easy to make huge retail investments in bitcoin due to high price range.The institutional investors and billionaires have deep pockets at this time to invest huge amounts in bitcoin which is the main reason for its slow growth.But still Bitcoin is top priority of investors in the market inspite of high transaction fees.
On the other hand all altcoins combined have market cap of $1 trillion and prices of altcoin like doge,Dot,ADA,ETH,LTC are much lower compared to btc and it is easy to invest huge funds in them and percentage growth in their value is usually higher.As it was the case with doge as people invested million dollars in Dogecoin because it was trading at $0.2 and they can afford to invest any amount in these coins.
So there are variation in Bitcoin and altcoin market which you need to understand properly and you will be have clarification of all your doubts.Bitcoin Will always remain king of cryptos.