If you really don't want any swap then you can use zRAM. I've heard even just a little bit of swap space (even zRAM) can help a lot. Note that when you set up zRAM, if you set it to 16GB that does not mean it will cap at 16GB of RAM usage, it means it will cap at 16GB of data pre-compression and its actual RAM usage will likely be closer to 6GB when full. And when it's empty it doesn't use any RAM.

Here is an article In defence of swap: common misconceptions by Chris Down from 2018. It has a "tl;dr" section with 7 points, if you just want have a quick look.

I setup a swap file instead a partition, it's just more flexible, but same concept. The swappiness settings cat /proc/sys/vm/swappiness is at "60" with a total size of 64 GiB on a very fast NVME SSD. If this was a slow HDD, then any writes and reads would be much more noticeably slow. I had it disabled in the past too and didn't notice any difference. The only difference to me would be, if the system RAM fills up, then the system could freeze and maybe crash. Or the system will unload applications to make room, and it could hit randomly an important app. Imagine a program has a memory leak.

Gaming isn't heavy on ram. You need fast ram not lots of ram for gaming. Lots of ram helps with heavy workloads, compiling and software development and stuff. Playing a game only needs the recommended amount for that game, then as fast as you can get so as not to be a bottleneck for your CPU.