You are welcome. Check Pixabay.com, like I said, there loads of images there. Follow the link and just search for whatever image you need by typing in the keyword(s). You can check one of my posts to see how I referenced the images.
See this example below:
<center>image link here
[Pixabay image](pixabay.com) - (CCO Licensed)</center>
Using the above code will centralise the image with the reference. It already includes the source credit, so you can just use it directly. Just change the image link with the image you got from Pixabay.
Also, try and join the @SteemSTEM discord community. There are lots of mentors that can guide you there.
Thanks for the explanation. I will check pixabay.com prior to my next post.
I have joined steemstem discord Community before now. I will chat you up on discord.