What competition? No, BTC isn't involved in the competition between the sea of altcoins and tokens, or other types of species found in this world of cryptos. With what characteristic it has, it is automatically disqualified or over-qualified for it to still be included in the competition

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Altcoins include forks from Bitcoin, try to compete against Bitcoin and to beat Bitcoin. Bitcoin itself does not need to do the opposite, compete against altcoins.
Altcoin teams know that their projects are lack of quality, dedication for development and they want to make short term hype by naming their projects like Bitcoin forks or Bitcoin killers. Even so most altcoin projects fail and die with time because names can not help for development, demand and adoption in long term.
What about Trump, Biden, and their involvement in Bitcoin? Things have changed through the years but this isn't a bad thing because this can mean that BTC will now be more legal and accepted. And don't worry because BTC is still decentralized and will remain as is. Apart from that, or apart from BTC, I heard that the Blockchain Technology is also being used on politics in order to attain more transparency. That is obviously a good thing right?
They can have more or less, positive or negative, policy contributions for Bitcoin over years but they can not do serious thing to kill Bitcoin. It's because Bitcoin decentralization which is a strongest specification of this blockchain.
Bitcoin after many years has grown up a lot, matured considerably with time and with Bitcoin Spot ETFs this year, it has already become strong enough to survive and exist in future.