@user56502 the trick is layers. A baselayer (can be basic, no need for expensive brands) below a long sleeve jersey is sufficient for me at the current warm winter temperatures. When getting colder I either have a jacket of add another summer jersey under my long sleeve (cheaper option).
Something I also find very useful is a gilet. This protect you against the wind and is very light so can be stuffed in a pocket halfway through the ride. You can use this as an extra layer in winter and summer.
Essentials are closed gloves.
As you will see, you could spend a lot on clothing but I would start with the basics and add if needed/if you like the design/have money to spend.