Featured Images causing text wrap issues

( I put this on the themes issues page and realized that it may be better off here)

I have been building my website, (so it’s not visible yet) but last night I posted a new “post” and uploaded the featured image like I have for all the other posts but this time- when I look at the “home page” and the newest post is on top- the text from the post is wrapped around the right side of the picture and aligned at the top of the photo (image is on the left side) instead of under the photo where I want it. When you click on the post- it is aligned the way that I want it (words starting under the photo) but it looks bad on the home page.

I have tried all that I can think of, and searched for solutions, but it seems that most people WANT a text wrap around the featured image & so I haven’t been able to figure out how to remove it. What should I do? I know as a “quick fix” that switching to a landscape photo would probably fix the issue, but I want the image that I want (which is portrait). Can you help?
BTW- I am super new to all this (coding included) so please be very simple in your reply or I will be totally lost 😉

{I know I have a genesis parent theme with a child theme was purchased}