Stocks I owned for a company were, according to my broker, "delete liquidated" on 12/2022 following a Chapter 11. They didn't send me tax forms. Are they suppose to?

You enter this as worthless stock. Below is DianeW777  answer from a previous post:

You can report it in the year they are deemed to be completely worthless. This usually happens when a company stops doing business or files bankruptcy.  You should be prepared with your proof and retain it in your tax file.

The sales price would be zero and the cost basis would be what you actually paid for the stock and December 31st as the date of sale

 To enter worthless stock as investment sales: (You should use the description as 'Worthless'.)

1. Open (continue) your return in TurboTax.
2. In the search box, search for investment sales then click the "Jump to" link in the search results.
3. Answer Yes to the question Did you sell any investments?
   • If you land on the Here's the investment sales we have so far screen, click Add More Sales.
4. Answer No to the 1099-B question.
5. On the next screen, select the type of sale you had (stock, second home, collectible, land etc.) and click Continue.
6. Continue following the onscreen instructions to enter the sale. 

Helpful Information:

• IRS FAQ -Worthless Security

didn't your broker include this in their 1099 reporting to you?