BTC is highly recommend if you want to invest in crypto wold because as we all know that BTC is the king and no one can fall it down and also btc is good for long term investment it will make you rich if the price will go Up. But Op remember this if you have 2BNB right now then you can also hold it because bnb is also a good coin for investment. But the last decision are yours if you want o trade you le bnb to btc or just hold your bnb.
After all, Bitcoin is the best choice for investment, especially for newbies who are just getting to know the crypto world.
Because as you explained Bitcoin always dominates the market and is very good for long-term investments.