Guidance on HLD interview problems selection from HelloInterview

I'm preparing for SDE2 interviews (4.5 yoe), and done with DSA & LLD. Moving on to HLD, and I'll be using HelloInterview as my resource. I wanted to understand from the experienced senior folks here who have already prepared - There are currently 29 HLD problems listed over HelloInterview (free+premium combined). Should I do all the problems before I start applying to FANG companies? Or, what should be my selection criteria of problems? (Consider 80-20 rule for prep) Also, should I refer to any other resources while preparing for HLD?