Here’s my portfolio, 13% return after ~1 year. What should I improve?

Hello! I’m 21 yo, investing every month into this pie I made. I also buy S&P500 monthly. I achieved around 3-4% higher return on individual stocks compared to S&P.

I wanna hold this as long as possible.

Apple 15%
Microsoft 8%
Google C 8%
Amazon 5%
Coca-Cola 5%
Berkshire 5%
McDonalds 5%
Nvidia 5%
Mastercard 4%
Procter & Gamble 4%
UPS 4%
Disney 3%
Tesla 3%
Realty income 3%
Qualcomm 3%
AMD 3%
AbbVie 3%
Cisco 3%
Nike 3%
Monster beverage 3%