What's preventing Bitcoins from being accepted as mainstream payment forms? I'm working on a new blockchain and would like to learn what drawbacks of Bitcoin urgently need to be improved

Bitcoin has many advantages as well as disadvantages that may greatly affect our lives. For me, i think the greatest disadvantage of bitcoin is that, losing a lot of money instead of gaining profit. Bitcoin is about taking a risk for you to earn a lot of profit. Keep in mind that not all the time we can gain profit because sometimes we can lose some or we can be scammed by someone.