Short answer: It depends on your situation whether you’re using a dedicated bankroll to track your poker results, or if you’re using your a bankroll to keep poker/speculative investments separate from your living/family/other expenses.
Early in my poker journey I would track ONLY wins and losses from poker. Not tips, gas money, etc. I just wanted a metric to see my results and what I could work on to improve. But I also had funds outside of poker that took care of all other expenses. But I also wasn’t a “professional,” I just kept records to see if I was improving. (Spoiler, I’m bad at poker)
Later in my gambling journey, I treated all poker/gambling/speculative investments in the same boat. If I backed a player, it came from that investment pool. If I bought poker chips, it came from those funds. Vintage guitars or other music gear that were more investments, crypto, short term loans, etc was all from the same pool of funds. For me it was more about creating a separation between family expenses, solid investment, and then my “mad money” fund.
So ultimately, it depends on what you’re tracking. For me it evolved from almost feeling like a video game where I was just trying to get more “points” to today where I have three kids so I’m much more responsible with what portion of my funds goes where.