I advise you to invest all your money in Bitcoin, because from the existing graph, you can see that the increase in the price of Bitcoin in 1 year is 128%, so if you invest in Bitcoin with capital of $8k, then you will get a profit of $10,240 and that is the same just like you get a daily profit of $28 (according to what you want), that's why I suggest you to invest in Bitcoin and now it's not too late for you to invest in Bitcoin, because the price of Bitcoin will continue to increase every year.
Your advice is appreciated because there is a risk related to every other coin instead of bitcoin so whenever you want to get 10 percent of profit then choose bitcoin. But in the case of bitcoin you cannot get daily reward but you will get annual reward as the price changes regularly on annual basis. bitcoin from the past years suggests that as growth of time occurs so the growth of bitcoin increases too.
May be you use little or more percentage of money into crypto but if you choose bitcoin as an investment opportunity then you will see that how this little percentage turn into larger sum. With bitcoin you have to be patience as wait is the only thing that enables you to get what you deserve.