Why do i have a capital loss use of $3468 in 2019 when i only had gains of $468

can i just offset the $468 or do i have to use the max deduction every year?

Do you have capital loss carryovers from previous years? That may explain the difference. 

you must have had a capital loss carryover of more than $3468.  $468 is used to offset the gain and then up to $3000 of any loss remaining must be used.  line 7 of schedule D should reflect a negative $3000