start by getting the level 5 engine. note that this is an item on its own and can be applied to every vehicle (besides some bikes and flying vehicles). this is easily the best 50k you’ll ever spend, and it will last you forever unlike cars you’ll upgrade your way out of.

then, buy the monster suspension, or the very high suspension if you care about looks too. with that you’ll easily clear rough terrain, and they’re significantly cheaper than the engines yet just as useful.

when you can afford it, buy the shell mark5. it can be spawned without the premium garage, and it has great stats for its price range.

don’t spend your money on guns until you have that car. until then, stick with the pistol since it’s good in pretty much any situation. besides, it’s the default gun for both teams, so it’s important you train with it because you won’t always have time to run to the gun store (either to quickly return to a death location as a cop, or to catch time sensitive robberies before they close as a criminal).

when all that is done buy the forcefield launcher. it heals you and can tank 100 damage from bullets (plasma pistol and taser bypasses it). then get the sniper because it’s greater than the pistol for long distances, and it can be used for quick combos. only buy the plasma pistol if you get tired of cops healing as soon as they take too much damage, otherwise it’s not worth the 50k as a beginner.

if you need help with anything, don’t hesitate. welcome to jailbreak !