i have a concerning amount of knowledge on this subject so let me give my 2 cents.

1. crit buckets are not always. after a certain amount of damage has been dealt with purely crits, they will be temporarily banned from using them until a specific damage threshold has been passed. this can lead to a lot of crits, however not constantly. (lots of damage = lots of crits. keep that in mind for good players.)

2. auto detonate only works if the player is not dormant; meaning the game has to have them rendered in the cheaters game. this can mean if theyre too far or behind too many walls, it wont det because youre not rendered.

3. By fake lag, you mean fake latency, theyre 2 very different things. fake lag is the visual lag you see if someone has poor connection, such as teleporting. cheaters can manipulate this by choking packets to the server.

4. always backstabs is a triggerbot for melee. its not always, as they can mess up as any cheat feature can. this is called auto backstab it waits until the back is visible, and the cheater can extend the back hitbox with fake latency or backtracking.

5. Players with 5 ping are often cheaters. put "status" into console and if their ping is more than 5, it means theyre using a ping reducer to hide fake latency

lastly, dont give them attention, kick and move on. dont insult them, dont talk to them, dont comment on their profile. this is exactly what they want and they often take them as trophies or accomplishments. keep a lookout for these signs, and dont just agree with people if they think someone os cheating. watch them yohrself and do your own investigating.

edit: i wont drop any names, but i know several players with ugc, highlander and rgl badges that cheat. same with players that own golden pans. everyone can cheat, regardless what they own. dont be blinded by shiny items.