You’ll come out stronger, and this tough experience will only sharpen your skills as a landlord.Cheers,Rene I completely understand your frustration—situations like these can be incredibly challenging, both financially and emotionally.

Learned some negotiation skills through this deal.

I am not the most technical person but in this day and age, not being technical is even more reason to welcome opportunities to use platforms that help develop that skill. 

I would try to tie those experiences and skill sets to your REI path.  

A successful STR needs a good bit of cash upfront and if you’re doing a BRRRR then even more now for rehab.  100% financing everything and the rehab is not advisable unless you’re a very skilled and hands on STR investor.  

They also appreciate honesty and transparency so they can make decisions fast without any surprises.Some of the top skills that you can focus on are:Comping: Knowing your comps inside out is a must.Negotiation: Being able to connect with sellers and strike a good deal is huge.Networking: Relationships with buyers, agents, and other wholesalers are invaluable.Also, Get to know your local market being able to talk the talk in your area will help a lot.

Many of them might be skilled folks but they are not always the best estimator and business person. 

The deal fell through because I couldn't line up the financing during COVID......God/Universe has a way of looking out for us...As investors, a crucial skill we develop is to take our emotions out of the situation/deal, but that is hard when we have invested a lot of time and money into a deal. 

@Kenneth Jenkins you forgot to mention owners that expect a PMC to use contractors off Craigslist that are unlicensed, NOT insured and rarely have acceptable experience/skill - but, they quote the "best" price.These same owners will sue a PMC if using these types of contractors results in a tenant lawsuit.

It could be some sort of skill set for renovations, design for furnished rentals, specific market knowledge, owner occupied loan products for a house hack, etc.