I found several links from different sites. I don't know if they're all reputable sellers or not, so maybe just look at reviews and stuff.

https://www.amazon.com/Merax-Reversible-Sectional-Pull-Out-L-Shaped/dp/B08Z47QVVX?th=1

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https://www.amazon.com/ATY-Sectional-Sofa-Pull-Out/dp/B09PD4XXKH/ref=sr_1_2?

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https://www.overstock.com/Home-Garden/91.5-Reversible-Pull-out-Sleeper-Sectional-Storage-Sofa-Bed/33493929/product.html?option=62634212

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https://www.lowes.com/pd/GZMR-91-5-Inch-Reversible-Pull-Out-Sleeper-Sectional-Storage-Sofa-Bed-Corner-Sofa-Bed-With-Storage-Chaise-3-Seat-Both-Left-Handed-And-Right-Handed/5001921413

If you search reversible pullout or pop up sleeper sofa/sectional, etc. you can find similar ones.