Should I cancel my trip if I’m low on money?

Hi all! Long story short, I was laid off several months ago and my mental health has been bad, but I was so looking forward to the Christmas markets to bring back some magic into my life. I can stay over at a friend’s place, but I don’t want to be a burden to anyone for more than a day or two, yet I do want to explore the city again.

Should I call it quits and make peace with the fact that I can’t afford going to all the museums and eating nice meals and attending the Christmas markets, or should I still try to make it happen, but on a budget?

I’m sure there are free things to see, like some churches and gardens and the Palace of Justice and what not, but I don’t know if it’s possible to have a budget of 20-30 euros a day and not feel like a beggar?