There were many learnings for PTI here.
I think in the end the delays in Intra-party elections impacted everything but those are also necessary. Many many or rather most of PTI workers, MPAs and MNAs were new to this process. I am sure they all got some good experience under the belt.
Next time, everyone will be much prepared.
As a party that just grew up over 1.5 years, they will take all the learnings in and have a better on-ground, polling station to polling station for next time. Folks like Asad Umar, Andaleeb Abbasi, Dr. Arif Alvi, Dr. Yasmeen...... all these folks will know what all they have to do and will have a good 6-10 months to get ready.
As a party, PTI will only loose if we don't learn from our own mistakes this time.
Remember what Kaptaan said........ we only loose, if we get dejected and give up. Lets not give up and come back with 10 times more effort.