winner didnt accept my giveway

Just wait a week, and if he doesn't accept it by then, request a reroll.
P.s. Might want to remove his profile link.

Wait a week, and if he doesn't reply/actvate/mark the giveaway, submit a ticket for a re-roll.

If you've tried contacting him on steam and through an old giveaway, there's not much else you can really do.
It sucks, but it happens.

Read the FAQ's, he has 7 days to mark as received. Also calling out is strictly forbidden here. Take down the link to his profile

If he rejected the gift, i believe there's a ticket where it lets you choose another winner. If he hasn't accepted yet then you have to wait a week.

Ended 1 day ago

They have a week to claim it, after which you can re-roll.

thats make me to not do giveaway with lvl 0 contributor

like you?