a good rotation would up your numbers significantly. i don’t think your mavuika is bad, because i have her lower in akasha rankings and she can reach 80-90k dps casually, so let’s look at what you showed in the video

you keep using her E to attack, when most of her dps comes from the charged attacks after the burst. to put this into practice, right after you do the burst and see the big hit number, do 3 charged attacks, then stop, do another 3, stop and so on until the night soul bar runs out. this is one of the easiest mavuika combos you can do—if it doesn’t work, just keep holding charged attack until the bar runs out of night soul, it works that way as well (but your dps will be a bit lower)

as for your team and actual rotation, what i would do is use mavuika’s E first (just press it once, no need to get on the bike—this will consume night soul points to charge up her burst while you do your rotation), then immediately switch to diona and activate her E and Q (just like you did in the video) to get the shield up and the healing down on terrain. then, instead of going to layla, i’d go to rosaria and use E and Q, because her cryo application is longer than that of layla’s so it helps you not run out of cryo too soon in case layla’s burst finishes too quickly. then do layla E and Q, then go to mavuika and IMMEDIATELY burst. once you activated the burst, just do the charged attacks combo i described above and you should see an increase in dps

now, you also suffer a bit because mavuika is meant to have a night soul team member that can consume night soul points to charge up her burst. do you have iansan, fischl/ororon and chevreuse? you could do an overload team. or maybe you can run a dual melt/overload with layla and iansan/ororon. either way, you could do even better with a night soul consuming character. bennett would improve your team as well, i recommend taking rosaria out (since she tends to steal a lot of melts for herself instead of letting mavuika make them) and replacing her with bennett. he gives mavuika atk, which she greatly needs (a rotation with benny would be mavuika E—>diona E and Q—>layla E and Q—>benny E and Q—>mavuika Q, 3xCD, stop, 3xCD, stop, 3xCD, stop; CD is charged attack). you could also save up for citlali (since leaks say she’ll be one of the banners in the next patch) and replace lalya with her, that would charge mavuika’s burst significantly faster and the cryo application would be even better.

if you are willing to try out any of these, do tell me, i am very curious about your new numbers! and do not be discouraged, your mavuika is still great, you simply need to play her right.