Price range is anything up to around £100 really but ideally it'd be closer to £50 bc I need to save atm

Second hand preferred as I don't want to spend much. I don't really care about playing graphics intensive games at high settings for now, just need something that will (hopefully) last the GPU shortage.

Preferably AMD as my monitor is freesync, and something that can handle two monitors (or should I just plug the other into mobo? Idk)

I mostly play League with my gf so it needs to handle that and preferably at 60fps (low settings is fine), other than that the most graphics intensive games I'll probably play would be No Man's Sky, Dark Souls 3 but I don't mind much if it can't handle them.

The most important thing is that it can play games smoothly and will last at least a year or so. I don't know much about different GPUs as I only dip my head into that world when I want to upgrade.

All help is greatly appreciated, pls save me from the embarrassment of barely being able to play Terraria while my gf has a setup that slaps games around on ultra 1440p 144fps :(