As a very average player I found using weapons at mid range are your friend, put distance between you & them because 90% use handcannon shotgun so play to your strength (range). Pulses like no time to explain are forgiving & get the job done, scouts like mida, or jade rabbit on longer maps, closer maps you can still play back a little & using something like khvostov. Then importantly, put triple target mods on your helm, & triple flinch resist on your chest, make sure to use the correct ones so say mida, use kinetic targeting & kinetic flinch, these are ganechsmging & give you the edge Vs people who don't use them. Find the best time to play dependent on your region. For me, early morning so say 7am to 2pm is best, America is asleep & European kids are in school so the whole game is easier (for PvP) as you're playing tired people, people off work, people like you etc, once you hit 2-3pm it gets very sweaty & that lasts thru to the morning as American kids hop on as Europe are going to bed. Competitive can be a better choice than 6v6 if you're below average, it kinda has sbmm & there's some poor players in there, longer mm times but a better experience if you're ok with 3v3. 6v6 can be ok but is plagued with bad connections & sweat these days. Try to react better when shot, if your losing a fight dip out the fight, I like blink on warlock for that reason, don't stand there taking damage as better players don't miss these days & you'll lose every time. Have a target & complete it by whatever means, make progress & don't take bad scores or performances badly, remember you're there to do challenges etc & no one cares about how you do, except you. Turn text chat off, it can only bring you pain if anything at all.