How to get latest B2B trends and ideas ?

It is really hard to have a good sense of what is going on in multiple industries at the same time. Unless your daily job is to be kind of analysis in VC or investment firms. So start focusing on a selected one. Keep it narrowish. Fintech or Healthcare is not a good pick because they are wast. In contrast, "Enterprise SaaS for Hospital Management" can be a better start. Then sharpen your google expertise and search for events, people, industry-specific news outlets, newspapers (yes physical ones), start following industry experts on Twitter or other social channels. Generally speaking, start listening and hang out where these people are typically hanging out. Try to ask for a coffee one or two of them and ask them open-ended questions about the way they organize their work. After a year or so, you will have some ideas about what are the trends and problems. You will find that most of them are large organization issues with a huge cost of entry, but you might have some fresh ideas on how to break them.