Second hand clothes

Are you a horrible mom for not buying everything new? Sure do feel bullied. I'm a mother who left a domestic violence relationship and I'm not working. Is there anything wrong with buying used clothes or play mats? Stuffed animals or books. I'm so confused should I go through what I have and buy the $180 stroller or the $60 one should I buy new outfits instead of used or stop going to garage sales and pay $14 for toys

Someone mad me feel like there's not a big enough difference pay $20 for a new playmat instead of $5

Am I being stubborn not buying everything new.

If I had the money I would love to buy my child everything