Finally you're starting to agree with me that:
a) There are better players than Lamela we can buy. Bale is one but there are others. Pulisic would be one in my opinion.
and
b) Lamela is just a squad player. I.e. Upgradeable
Nope. Lamela is here to stay. He is an integral squad player.
Literally no one on this forum has said there isn't better players than Lamela out there. They're in our bloody squad. Stop making stuff up to try claw back some semblance of respectability. What there aren't, is players sculpted to the level of Lamela by Poch to do the job Lamela does.
Do you know anything about football? You don't populate a squad of 25 with week in, week out starters. One, it is not affordable. Two, it is not sustainable. You develop a squad of players of different roles and levels.
We could also buy Allison of Roma for 50m to be our number 2 goalie. Do you understand why we don't? He's a Vorm upgrade after all.
When you figure out the answer to that question, you'll figure out the Lamela quandary you keep getting wrong.
One day, you'll have the capacity to learn. But learning is probably just a subjective version of reality to you.