are used to mark a contrast with what has been said before. They never express consequence, result or conclusion, but contrast/opposition. They are synonyms of "however".
It can be used in speaking (even formal speech), or in less formal text types. [It is NOT informal, but it is not the most formal discourse marker that can be used to mark a contrast. It stands somewhere in the middle].
The Crown s5ep6- open in new tab
The Kemps: All True- Watch on Vimeo
Brothers Gary and Martin Kemp were founding members of the 1980s legendary band Spandau Ballet. In this mockumentary (a parody of a documentary), they pretend to be looking for work. A dictator asks them to play at their wedding, they refuse on principle, but, when offered 2 mill. GBP, they can find a counterargument to go.
If you mean to propose solutions after exploring the causes of a problem, or having discussed its implications, you can say:
In (the) light of the above, I suggest …
see examples of use here