u/3yellow_umbrellas

I'm new to international travel. Can you recommend what debit or credit cards should I have to avail free access to domestic and international lounge for 1 to 2 pax? I currently have UB Visa, Maya, and Maribank. The latter is for zero rate in forex.

Where to buy tickets and where to get preselling code, if necessary?

Is it advisable to book flights with layover in Qatar or Dubai for our flight to Munich in July? Layover in Taiwan is far expensive.