Yep. Depends on your exact laptop if there's space for a second drive. On my old 2011 MacBook pro I uninstalled the CD drive and installed a second SSD. Well, upgrading the HDD to SSD in the first place... THEN a second SSD
Also on laptop, yeah - I only ever had one laptop in my life (a Gemini Celeron for like 300 monies), but it has two drives (both sata iirc).
(I only need it to remote to my servers & maybe some web browsing.)
For any modern laptops, it is very rare to find one with dual SSD. I guess for your case it is different, my old 2012 Thinkpad can take dual drive too but it is slow.