Feel bad for putting my puppy in a crate during the day

I recently rescued a four month old puppy dachshund mix. I work during the day 7 to 3. When I’m not home I have been putting him in a crate, is this the right option?

Should I get him a playpen instead of the crate for when I’m gone during the day, and put him in the crate for when I leave for short periods of time. I feel so bad putting him in the crate. All he does is wine and cry and bark loudly for 30 to 40 minutes.

Please let me know the best way to contain him during the day.