If most players at the table play deep, then 900bb is not even 4BI, so losing that over 2 sessions is not that uncommon, especially if fish err on aggro side.

Obv gambling on credit is a awful idea and very irresponsible so
please don t buy in with your visa.

If we were talking about keeping you business alive by going into credit, nobody would oppose, yet here we suddenly call grinding poker gambling?
I agree that is not a good idea, but not because it's suddenly "gambling", but because by the time you need to dip into debt, you are already on a downswing and your survival is threatened. This means your mindset is probably crushed and you might have actually become a losing player through all the doubt and distortions that your mind produces. At best you might be slight winner. Adding credit card interest on top of that is a recipe for disaster for 99% of players.

Im fully aware that rude swongs can happen. 900bb is still 900bb though and this is over a pretty small amount of hands. I for one would definitely be questioning my edge and play in the game. Maybe I m 100% wrong and OP is a killer in the game with a terrible run of hands. Still though his post sounds like he s pretty shaken by this run, his confidence is down and his bankroll is in trouble. Doesnt sound like a great time to be buying in deep.

If I owned a business and I had to start dipping into debt I would certainly approach it with a lot of caution. Without a solid plan and some kind of strong confidence that theres the edge in the market that we think there is then I would frown upon going deep in debt as well. Idk what the laws are exactly but isnt going into business debt a bit less brutal then going into personal credit card debt?

And ya poker is 100% gambling. It can be gambling with an edge for sure obv but anyone who says its not gambling cause they can win long term is fooling themselves. We are all subject to stuff like gambling addiction when playing this game. I have personally looked at this devil str8 in the face at least once in my career.

Playing poker is certainly classed as gambling whether we like it or not . Although we are using our skill edge to make profitable decisions at the table we are also at the mercy of luck/varience, especially in the short term and even more especially playing live poker as our volume is so low.

Playing with poor bankroll management can send even the best players broke.
It is never a good idea to borrow money to play. It's hard to play A game when you are losing money you don't have.
Better off buy in shorter or drop stakes until you build a roll big enough to withstand varience

You're not playing 1/2 then, you're playing 1/2/5. It makes a huge difference.

Poker is a tough game man and theory has advanced a lot over the last years so this means the learning curve is pretty steep if you havent played much lately. I used to beat up on 400-1knl HU around 2008-2010 or so and I m sitting here grinding away at 20-50nl cutting my teeth. Don t wanna get you down but honesty with yourself is important and it sounds like your getting somewhere with that at least.

Idk what your goals and aspirations are and how this live game plays (live play generally makes me pretty nervous). Maybe practice on micro stakes online where the action should be pretty soft to prepare for the higher stakes live? Just an idea but could provide the arena you need in order to get a super solid game going.

You haven't stated the actual size of your bankroll, but from the context I can assume it doesn't exceed $3-4k. So you most likely have only couple buy-ins for the stake you play which is not good bankroll management. You can see that clearly when losing just 4BI has already had such an impact on your mindset. It looks like you are gambling with your life, hoping for good variance to keep you afloat.
You need to start protecting your BR. If playing actual 1/2 without mandatory straddle is not an option, then shortstacking seems like the best idea. If games are really good it should be relatively easy to pick up all the dead money and often get it in with huge equity advantage. Then, when you double up you can keep playing with a healthy stack. But you should still consider quitting when reaching around 200bb ($1k) effective, since you can't afford to loose that and you can't afford to play scared money.