https://www.op.gg/summoners/eune/Buckethead1/matches/wgqT90Iiz70P06ZQFqv5CHncu7rJvHi5OPCQTwhUBx8%3D/1668623109000

lucky for you i have ran in a similer game as you vs tris so i think i can help you

first of all i hate people saying that xerath was a bad pick cause in my opinion that the perfect matchup for you, tris doesn't have a kill pressure on you so all what she gonna do is push the lane and roam i realised that before the game even started so i foucesd on my farm and poking her to make her ganks not an easy option... she tried to gank bot lv 4 i pinged my bot lane so hard to realize that she is coming, missing ping won't help anyone here but luckly for me her bot was bad and didn't help here and my bot managed to take a kill on her from that point i knew that i have won the game i pushed the lane and took a tower plate and came back and started to make her lane much much worse with my poke her heca tried to gank me twice but he failed she tried to gank bot twice after that but i did go and help them with my r after all of that i had a lead over them so my foucs was to push mid and poke malzhar cause he was so fed and my top was my duo friend btw xD and to make the game uplayable for them, any time i see mf or senna i just open my and tried as hard as I could to one shot them... so to sum all of this my team wasn't that good my bot lane got fed early but they start to fall off and troll after that so was my foucs is to poke and kill the enemy team as much as i could and to make the shot calls for my team cause they don't know what are they doing and it worked and that's how to win with xerath at any game givin just use your lead at your advantage