I remember when I was in your position less than four years ago as an 8th grader. I can relate to your situation and understand where you may be at this point. That said, a could suggestions:
1) Content! On a robotics team website, content is
most important. Post more information about your team and
FIRST. You need to consider a wide variety of visitors including veterans of FIRST, team members, robotics "newbies", and others. There should be something on your website for all of them.
2) The website should reflect your team colors.
This was my first design in 2007. Can you tell what the colors of my team are from that? So before the FIRST season started, I made a
new one that was more colorful and reflected the team identity.
I've always been a fan of simplistic designs. But, in my opinion, a robotics team website is not where you want to have a simple monochromatic website. Next time, try to make something that reflects the team identity.
I see right now you are using the default theme that comes with your CMS, concrete5. If you're not sure about how to design a website, let me know. I'd be happy to help.
3) Try to make everything uniform. Right now you have the linked icons on the right sidebar that go to different areas of the website that have different designs/looks than your homepage. I noticed that these are all separate installations of pre-made scripts you probably installed for different functions. It might be best for you to use something like Wordpress which would allow you to create one installation, and then install plugins that can do all these functions (image gallery, calendar, polls, ect.) for you.
4) I would not place Google Ads on your site, at least not during the FIRST season. Your primary goal with a robotics team website should be to inform the visitor, not to distract them and make money off of them.
5) For statistics (you have a hit counter in the far right corner), I suggest you install Google Analytics. It provides much more in depth data than just hits. For example, I knew when our website had been judged for the Alamo Regional because someone from San Antonio, Texas had spent approximately 31 minutes, visiting 26 pages on our website.
Many of the things Tom said above are also true. If you need any assistance or have any questions, PM me or something, and I should be able to help.