Hello,
First of all thanks for choosing our Theme, we are glad to be you in the WoodMart WordPress family :-)
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I saw the screenshots you attached.
1) You can set the product carousel position from Theme Settings >> Product Page.
Screenshot for Clarification: https://ibb.co/28Cr4MS
2) In order to display “You may also like..” You need to enter a product editing mode and add products into Upsells of Linked product tabs as shown: http://prntscr.com/j5tv88
You will find more information here: https://docs.woocommerce.com/document/related-products-up-sells-and-cross-sells/
3) This is the default behavior of the related products that the excerpt is not displayed on it and there is no such option in theme settings for this.
4) You can change the product styles from Theme Settings >> Shop >> Product Styles.
Screenshot for Clarification: https://ibb.co/whRfNmB
Regard’s.
Xtemos Studio.