Is this a bug on my tomato plant?

it looks like stems or roots not some type of bug

https://www.google.com/url?sa=i&url=http%3A%2F%2Fwww.tomatodirt.com%2Fwhat-in-the-world-is-on-my-tomato-stems.html&psig=AOvVaw2s1iQfYsqn1WTZj7knUh2w&ust=1629922699353000&source=images&cd=vfe&ved=0CAkQjhxqFwoTCLDD86y9yvICFQAAAAAdAAAAABAJ

These are actually what they look like - roots! The plant is stressed and trying to grow as best it can. Stressors??? There are a million of them: too much sun, too much humidity, too hot, too much water, not enough sun, not enough nutrients in the soil, poor soil (ex. clay or sand), even exposure to herbicides. Put on your detective hat and figure out what the biggest stressor is and try to alleviate it. Your plant will thank you.

Hello. Here’s a few link that could possibly explain the situation you’re seeing.

Hope this helps

https://www.walterreeves.com/food-gardening/tomato-roots-on-stem/

http://www.tomatodirt.com/what-in-the-world-is-on-my-tomato-stems.html

Hi. Roots, desperate to grow! Cut them off and plant them up and just see what happens! More plants!

Those are roots, you could cut them off and see if they will grow, just a fun experiment.

Those are the roots trying to grow

These are actually roots.

Hi Jo-Ann, hope this helps you out. Tomato plants, particularly heirloom varieties, and tomatillos may produce small growths with short, fleshy, bristles. These are adventitious roots or aerial roots that would grow into normal roots if placed in contact with the soil. But in many cases, they can appear higher up on the stem