You don't get to "save this for a later year."

"When you figure the amount of any capital loss carryover to the next year, you must take the current year's allowable deduction into account, whether or not you claimed it and whether or not you filed a return for the current year." (Pub 550)

I found these articles/topics for you to read:

https://ttlc.intuit.com/community/investments-and-rental-properties/discussion/do-not-need-carryover...

https://finance.zacks.com/long-capital-gains-losses-carry-forward-3552.html

Example: "For a large loss and no capital gains, your loss will carry forward indefinitely with a $3,000 reduction in the carry amount each year until it reaches zero."