Alternative fix to our Solo problem
Most complaints are to add a solo duo mode, which can be the best solution without tweaking gameplay mechanics. But what if we kept solo/duos/trios/quads together as it now, but give solo players their own unique paths AND extracts.
Solo paths - similar to Farms central sewer extract where you have to drop backpack, but have an indoor tunnel system with entrances on each side of the map that only allow Solo players can enter. Therefore, any tunnel combat will be amongst Solos. With multiple entrances, Solos can exit the tunnels from at least 4 different areas to avoid teams camping them
Solo extracts - right now, you get guaranteed extracts on opposite end of map from where you spawned. Give solos the option to extract from all directions (north, west, south, east) and just add a minimum timer before you can leave (like Tarkov factory). Adding the possibility of early extracts for solos removes them from the predictable pathing that teams expect.
TLDR: Solo paths and extracts combined can allow solos to outplay squads without creating a separate lobbies. An experienced solo would be able to pick apart bigger teams one by one by engaging around solo tunnels/pipes and using/faking solo extracts when pinned down.