You get Bankrupt about several reasons. The Game plays completely differnt after the important Refits and more Enemy-Integrations in V.22. To get alive the first half Year (182 Days) and longer you have to do the following Steps:
1. Only upgrade your Main-Base with an Hospital, Training Centre, Storage Room, Generator and two Rocket-Defenses, the first 3 are very important in the first Base-Upgrade directly by Gamestart. In the second Month (Day 31) you get more Money for the Generator and one Rocket-Defense, in the third month (Day 62) for the second Rocket-Defense, which are important too.
2. After you get the Cleaner-Information to 125%, which get realy fast (the Autopsy and Interrogaton of a Living one gives you a big Boost), make your Soldiers Battle-Ready for the Cleaner-Base. But don´t attack it, before you are Battle-Ready for it.
3. To get better Battle-Ready for heavyer Aliens and the Cleaner-Base-Attack you have to upgrade your existing Weapons (Standard-Weapons) to Accellerated, which need some Time. The Riflemens, Infantry, Shotgunners and LMG-Soldiers get Minimum the Defender-Armor with the Plate Suit [Shotgunners, Riflemens, Infantry, Sniper] / Target Aid [LMG, Grenadiers]. Much better in that Combination is for the Front-Troopers the Warden-Armor with with the Plate Suit [Shotgunners, Riflemens, Infantry] / Target Aid [LMG] and Standard-Suit with Plate Suit [Snipers] / Standard-Suit with Target Aid [Grenadiers].
4. Until you get the Camoulfage Suit [an upgrade from your Standard Suit], which get the Warden-Armor and Plate-Suit completely integrated, you get an big Upgrade. Before you have to use the Vest and Plate-Suit-Upgrade seperatly first. That new Suit I use for my Grenadiers, Snipers and LMGs. After you get the Camouflage Suit [Stealth Armor], you can use the Target Aid and better Vests [like the Healing Suit] much better.
5. The Front-Troopers get the Guardian-Battle-Armor [Riflemens, Infantry, Shotgunners] with an Healing Suit as Upgrade.
That´s the Main 5 Points, I do for the Upgrades for my Soldiers. To give them more Firepower, 1 Soldier (later 2) get replaced from MARS-Vehicles with Upgrades there too [Alloy Armor, Rocket Launcher and Laser-Cannon].
To get more Money in the Game and the first Year (360 Days) you have to do following:
1. Make Autopsys, which get 100.000 Founds for the most Autopsys directly. Then you get about 300.000 to 400.000 Founds in the beginning Phases. I use that for the Upgrade of my Soldiers to geth them faster Battle-Ready and for 1 / 2 MARS-Vehicle for Support. The Vehicles are very good, esp. after they get the first Armor-Upgrade from Steel to Alloy.
2. Some Autopsys / Interrogations give you an monthly Found Upgrade (total 300.000 Founds [about 50.000 Founds or a little bit more for each Founder-Nation]).
3. After you get this Upgrades (Weapons / Vests / Armor) for your Soldiers, attack the Cleaner-Base at about that Time you get your Game-Over. In most Cases the Attack is done about Day 100 to 115 (don´t forgett the Accelerated Weapons and minimum light Armor / Vests). Then you get 1.000.000 Founds directly and an first big monthly Founds-Upgrade from all Founder-Countrys.
4. After you get your own Aircrafts (f. e. Pegasus Dropship / X-55 Phantom-Interceptor) and you Decomission the X-25 Angels as well as the Skyhawk-Dropship the montly Leasing-Rate drops drastically, which gives you more Founds at Month-End (about 300.000 only for the X-25 Squadron and Pegasus-Dropship in total).
8. With that you can build up an secondary Base in America or Asia-Pacific / Russia-Asia. I place my first Base like you in Africa with the full Radar-Coverage over Europe / Africa. Means: If all goes well, you don´t need more than 4 Bases in total. 1 Main-Base (with everything you need) and 3 smaller Bases (Storage, Fighters, Radar, Defenses).
But that is the atm-Status. I concentrate on that in the V.22-Gameplay. We will see how the Gameplay will be with the upcomming Version V.23, which get more already testet and refited / upgraded Features back and more Surprisses like the Cleaners we don´t know yet.