I’ve assembled my toolkit over several years as I’ve needed tools for specific jobs. No need to buy something before you need it. And when you buy it at point of need, you’re more likely to get the right thing - vs buy a tool, have it sit on the shelf for 2 years, and then when you first go to use it, you find it’s the wrong tool.
There are some basic tools that you need pretty much right away - torque wrench, hex bits, torx bits. Some of the more specialized stuff you won’t need for a while Eg bottom bracket tool.
Also, a little creativity allows you to use a tool you already have vs buying a new one. Eg I don’t have a master link pliers, I use a needle nose pliers and it works fine.