How can Blockchain Scalability be improved?

[osasshem]

ETH made a significant improvement in its Pectra Upgrade, numbered 16th, on its upgrade/update list (I used ETH as it is the number one altcoin). This upgrade helped in different categories, on the part of trx fees and price increment made it remarkable. The crypto industry has been getting bigger until now, and up in the future, we have more people who will venture into this ecosystem. What solution can be made to improve Blockchain scalability as the crypto community will be flooded with more crypto enthusiasts and investors in the community?