Here's how I constructed my wooden sliding or rolling gate. I have very basic construction experience, and no crazy tools. I don't explain step by step, but its pretty easy to see how I put it all together. Most important parts were the rollers I found on amazon, I will link them below. Please let me know if you have questions, I will try my best to help. Good luck!

Links to the parts below:

Track wheels (rollers) - https://amzn.to/43TbXg0

Bottom wheels - https://amzn.to/3KTUF9Z