Sorry to sound like a dick but if you are cold and don't like it, layering is the way to go, if it didn't work for you, you were doing it WRONG.
I'd go with Killclimbz' suggestiongs as well as to add a puffy under the shell.
The following layering system is bombproof and even when it is very very cold I have a hard time wearing ALL of it.
1. baselayers: do not wear tight, compression style baselayers. Get loose fitting. Not only does this fit better without "riding up" during action, the loose layer actually insulates MUCH better (people on this forum will argue that they like their tight ass tights but if you are cold, this is not really an area for opinion, the looser options are significantly warmer -science/physics)
2. get a merino wool sweater to wear between your puffy and baselayers
3. get a nano-puff or micro-puff jacket to wear between shell and baselayers.
4. get a merino wool buff for your head neck and face
If you don't like our advices get one of those super oversized puffy down coats that the rappers wear on the east coast winter videos.
Neni and OP if you are sweating and it is making you cold, you need to invest in higher quality materials that breathe and wick. Baselayers that don't wick are so 30 years ago, spend some $$.
What are some good loose t shirts that wick away moisture? My base layer is really good but I've always ridden with tighter shirts and I hate it. I'd like to find some nice tees that work since I think I'd be more comfortable with them.