Capital loses on taxes

Hi,

Admittedly a rough couple of years with the market. Sitting down doing 2022 taxes and am confused about loss carryover. Say I had a 20k loss in 2021 and another 10k loss in 2022, would I need to use 3k from both years on the 2022 in order to carryover the losses to future years? Do the two carryover amounts then pool together at that point?

I already need to go back and refile 21 as I forgot to include the loss already, just want to make sure I know how to get the most out of a shitty situation.

Thanks.