I don´t have access to brave since updating to MacOs sonoma 14.4

I just bought a new mac. On my old mac I haven´t been able to update the system due to lack of memory. Now on this new computer I don´t seem to be able to use Brave. I tried to upload a new version and then it worked for a few minutes and now it doesn´t open any web pages.

I can see that many are experiencing similar issues. But I didn´t see any answer that would help me.

Greetings, Gudrun