USA Offset Gains from Business Sale

[sbowner]

After many years I am planning on selling my business and will see substantial Capital Gains from the sale. I do not have any capital losses to offset these gains and will still have income. What are some reasonable ways to offset this gain or at least avoid getting hit by a substantial (even more now in 2021) long term gain? Some things I have looked into include: 1) Opportunity Zone Fund- I don't think that's for me given long term commitment. 2) Set up an IRA for some tax shelter - seems like a small amount 3) Start a new business and generate a large amount of K-1 Loss the same year as the sale. I am particularly interested in this option and what could be counted for loss and how much could I offset?