Saying that sidechains and lighting network are the solutions to the problems we are having now is just ridiculous, let me remind you that these systems have not even been developed yet, they can not possibly be the solution to the problems we are having now.
The systems have been developed, but depend on a soft fork which hasn't been deployed yet. It will be released next month, and deployed as fast as safely possible.
The blocksize can be increased now on the other hand and double the capacity of the network.
First of all it has already been trivially shown in this thread that a blocksize increase won't solve the problem at hand. If you think every bitcoin user in the world can just switch to different software yesterday evening, and use bigger blocks by now, you are having fantasies. Fortunately noone suggest anything like that either. Deploying larger blocks will take much longer, since every single node in the world has to upgrade. Unless you plan to deploy an altcoin, which you are free to do of course.
Maybe you could ask Block Stream if you could use liquid, which is their closed sourced centralized sidechain, for a monthly fee to their for profit company of course.
I have no need to. I pay normal transaction fees, and am therefore not affected by the current spam attack.