Can I use 'for oneself' as the meaning of 'without other's help'? Or do I have to use 'by oneself' or 'oneself'?
* example sentences:
1. You should judge for yourself.
2. What's the topic in the paper this morning? / [Handing over the paper] See for yourself.
3. I solved the problem for myself.
4. I figured it out for myself.
Thank you very much.