I feel like i have no idea what i am really doing. Tend to just put everything it e a target date fund for retirement or a 500 index fund.

I feel like i have absolutely no idea what i am really doing. I tend to just put everything it either a target date fund for retirement or a 500 index fund. I have lost probably around $12k in all my accounts in the last month. I keep hearing people say to rebalance my accounts i don't really have any idea what that means.

https://imgur.com/eW4ML9V

https://imgur.com/IG6BzCA