Very sorry about the loss of your friend. I'd tend to agree with taking time off to grieve and process things, but everyone's different. Another alternative -- or perhaps even as you return to trading after taking time off -- would be to lower your risk/position size.
The forex market drives people nuts already. With emotional distress, things can get very messy, especially with the on-going war. So it would be better to take some time off.
Sorry for your loss. I’d really suggest you take a break from everything and try to heal yourself. If you really want to continue, you can consider automating your trades to reduce the emotional influence. Good wishes!
