I think I removed the app but the symbol is still in my menu. I already restarted my MacBook many times because I removed the app a couple weeks ago.
Try holding down the Command key and dragging the icon out of the menu bar. If that doesn't work, you can try resetting your Mac's menu bar by following the steps outlined in this article: https://www.macworld.com/article/3267194/how-to-reset-your-macs-nvram-pram-and-smc.html