"It was generated by lichess though ... lichess.org/game/export/cu7qVvMI?evals=0&clocks=0 is the link"
If you click that link, here's what you get:
[Event "Läufer Einschränken Arena"]
[Date "2021.06.26"]
[White "AlexausK"]
[Black "Gegers"]
[Result "0-1"]
[UTCDate "2021.06.26"]
[UTCTime "12:52:16"]
[WhiteElo "2070"]
[BlackElo "2002"]
[Variant "From Position"]
[TimeControl "420+5"]
[ECO "?"]
[Opening "?"]
[Termination "Normal"]
[FEN "r4rk1/1b3ppp/5n2/p1p1p3/Pp2P3/1BP4P/1P3PP1/R1B1R1K1 w - - 0 1"]
[SetUp "1"]
1. cxb4 cxb4 2. f3 Rfd8 3. Be3 Rd6 4. Red1 Rad8 5. Rxd6 Rxd6 6. Rd1 Rxd1+ 7. Bxd1 Nd7 8. Be2 Bc6 9. Bb5 Nb8 10. Bb6 Bxb5 11. axb5 a4 12. Bc5 a3 13. bxa3 b3 14. Bd6 b2 15. Bxb8 b1=Q+ 16. Kh2 Qxb5 17. Bd6 f6 18. Bb4 Kf7 19. Be1 Qb3 20. Bb4 Ke6 21. Bf8 g6 22. Bb4 f5 23. exf5+ gxf5 24. Bf8 e4 25. fxe4 fxe4 26. Bc5 e3 27. h4 e2 28. Bf2 Qxa3 29. g4 Qc1 30. Kg2 e1=Q 31. Bxe1 Qxe1 32. h5 Qe4+ 33. Kh3 Kf6 34. Kh4 Qf4 0-1
Which looks completely correct to me, and not at all like the broken PGN you posted. Which was certainly not generated by lichess.
If you click that link, here's what you get:
[Event "Läufer Einschränken Arena"]
[Date "2021.06.26"]
[White "AlexausK"]
[Black "Gegers"]
[Result "0-1"]
[UTCDate "2021.06.26"]
[UTCTime "12:52:16"]
[WhiteElo "2070"]
[BlackElo "2002"]
[Variant "From Position"]
[TimeControl "420+5"]
[ECO "?"]
[Opening "?"]
[Termination "Normal"]
[FEN "r4rk1/1b3ppp/5n2/p1p1p3/Pp2P3/1BP4P/1P3PP1/R1B1R1K1 w - - 0 1"]
[SetUp "1"]
1. cxb4 cxb4 2. f3 Rfd8 3. Be3 Rd6 4. Red1 Rad8 5. Rxd6 Rxd6 6. Rd1 Rxd1+ 7. Bxd1 Nd7 8. Be2 Bc6 9. Bb5 Nb8 10. Bb6 Bxb5 11. axb5 a4 12. Bc5 a3 13. bxa3 b3 14. Bd6 b2 15. Bxb8 b1=Q+ 16. Kh2 Qxb5 17. Bd6 f6 18. Bb4 Kf7 19. Be1 Qb3 20. Bb4 Ke6 21. Bf8 g6 22. Bb4 f5 23. exf5+ gxf5 24. Bf8 e4 25. fxe4 fxe4 26. Bc5 e3 27. h4 e2 28. Bf2 Qxa3 29. g4 Qc1 30. Kg2 e1=Q 31. Bxe1 Qxe1 32. h5 Qe4+ 33. Kh3 Kf6 34. Kh4 Qf4 0-1
Which looks completely correct to me, and not at all like the broken PGN you posted. Which was certainly not generated by lichess.