>>408310561
First things first anon upgrade your pc, GPUS are cheap as dirt right now. You can get a 2070 (perfectly fine for basic VR usage) for like 200$ used on ebay. Pair that with some ddr4 ram and a ryzen 5 3600 and you'll be in good shape for less than 500$. Sell your current shit to some retard on marketplace for 200$ if you need to recoup some of the cash. 
Quest 2 is a great headset I love mine sold my index and vive gear only kept the basestations because of how comfy quest 2 wireless is. Only minor downgrades are the controllers (no finger tracking but much improved battery life obviously inside out but you could upgrade to pro controllers if you choose to) and the audio but audio is still decent for what it is. Index definitely has a better mic and spatial audio though. Godrays and screen door effect are less on quest 2 vs index by far though. No adjustable ipd kinda sucks but you can trick it inbetween the 3 built in sliders if need be. Like the other anon said if you're gonna go standalone you'll be limited on games big time but there's a ton of fun standalone games to play and VRC on the quest 2 standalone has gotten better now albeit you're still really limited in worlds and avatars but atleast you have physbones now. Sideloading apks is easy and you can play pirated shit to your hearts content without any worry of getting banned. I've always tried offline games like RE4VR and stuff sideloaded so idk if you can play multiplayer games sideloaded. Would be a good headset to get while you wait to get that pc upgraded but if you can swing some $$$ now is a great time to get a pc. Can get a 1660 if you're on a real budget for like 100$ right now. It's the minimum card i'd use for pcvr or a rx580 8gb those are cheap as dirt now too. Just make sure your cpu isn't complete shit if you get a better gpu cause you'll need a minimum of like a 6th gen i5 imo to run vr decently.