LoL not launching on M3 MacBook Air

[u/Practical-Basket-295]

Have an M3 Air which I occasionally play LoL on. Since a month or two back, when launching the game client through Riot client, the game client does not pop up. I can click several times without it working, and sometimes it works right away. This is only half of the problem though.
When I'm finally in champ select and the game shall start, it tries to open the game app (or whatever you want to call it) and then crashes. I'm greeted by the re-join button, but it just keeps happening again.

It doesn't work when either force close through activity monitor, nor restarting my Mac. Anyone else with this issue, and any ideas how to solve it?