There is a way to make solo lobbies but it's tricky and expensive both methods but very doable ^_^ .
One is buying, if it's 20 max players in raid lol, buying 20 consoles and queueing them together, other method is another thing also expensive per month lol. (20x Tier 3 subscription NvidiaGeForceNow cloud gaming which is also like 21-23 euro with VAT forgot lol per each single one)
Other than that , budget version is get a clan/group and discord for specifically empty lobby or "friend lobbies" perhaps
To put things in perspective, Atturson on Delta Force had some video on youtube in SpaceCity map, what the chinese do most times, they either fill a whole server of ZeroDam or other maps, or in Space City best loot -> they infiltrate 1/1/1/1 in all teams then betray their 2 random teammates and share the loot gear at the end and exfil-together, it's cancer yeap but oh well, what can we do about it, only the developers ( devs from China too) can ping-lock and VPNlock them out( just Regionlock won't help since they VPN, needs maximum ping 120-130 to remove them from most games like Tarkov/Hunt Showdown/DeltaForce/DMZ etc but then you won't be able to play with friends from other continents also)
Another POSSIBLE budget is if some1 manages to fully emulate new consoles for PC then you can make yourself a giant server/V.M machine and host multiple on your own and multibox them at the same time for pve/pvp or just getting "empty server"
But even then it's not guaranteed you won't find a few players that queue in, if the game has many ppl at same time queueing by coincidence same miliseconds as you guys.
So all of the methods are costly, unless you get good friends in group/clan and have fun together making said bot lobbies together. And i would not recommend you do "bot lobbies" together on your main accounts but use alt accounts in case they detect pattern and ban you for queueing like this.
In DMZ modern warfare 2 also ppl from China but also our Europe&US ones ain't saints either, they would queue together first seasons of the game 3/3 into a 6-man squad meet eachother at map start, the party leader would synchronize search, they had to nerf this into 4-man squad maximum now since a while.
You could try queue in other continents servers especially when it's not many players natives playing in those timezones on those specific servers, that might help also.
Also if you guys are interested in my topic i have a nice macro and more bonus stuff for Arc ^_^
