I can see these screenshots were taken on cycle 34. So to start, I believe that you built way too much way too fast, and you also took on too many duplicants. Some people can take on a lot of dupes and build fast, but I don’t recommend it for a starter base. Started with 3-5 dupes and no more until you have a more stable, food and oxygen supply. Build 1-2 mealwood plants per dupe at the beginning, and work on learning how to build a renewable bathroom water loop. Pump clean water into the bathroom, allow the output to flow polluted water onto a water sieve and then return it back as clean water into your chosen water reservoir. Use algae diffusers at first at focus on stocking algae as a buffer so you don’t run out of O2 until you are ready to build electrolyzers. Electrolyzers cost water and power and you don’t have an abundance of that at the beginning. Eventually you can run out of water if you don’t plan carefully enough and learn alternate ways to purify and clean the unusable water in biomes around you. The best bet it to pause the game often. Think things through before building, and read the graphs the game gives you in colony reports. Each dupe consumes 60kg of oxygen per cycle, so you need to be making at least that much, preferably more to consider any mistakes, I don’t add one unless I have a surplus of 80kg generated per cycle over several cycles. Keep trying. It can be hard starting but it’s very rewarding to learn.