Retirement tax questions

Thank you for this clear explanation.  Sounds like I would not have UBTI.  I traded the ETFs a few times and had some gains in 2022 (big losses in 2023 already!).  But since taxes have a lot of traps, I wanted to make sure I don't accidentally miss anything.  Where would I be able to find UBTI on K-1? Someone mentioned box 20V, but my forms do not have that box, only 20A and 20B. I don't see a box description that says UBTI or "unrelated business taxable income" either.  Does this mean I can just file it away and do nothing about it?