Thank you guys for your replies and advice. 3 things I have learnt after reading all replies:
1. Nobody in this forum ever used loans backed by BTC and never wanted to.
2. My investment strategy is bad, because I believe too much in BTC and don't have savings for 3-5 months that can cover my emergency needs.
3. I shouldn't do vacation if I don't have spare funds.

That's pretty fare. I take it. Thank you, but I don't believe nobody ever used loans backed by crypto in this forum, please reach out...