I have got a 17 move f2l-1 but don't know how to finish the solve.
D2 premove
Scramble:B2 R' D2 F2 L2 D2 U2 L D2 U2 R2 F' R U2 L2 U B F' D' B2
Inverse scramble:B2 D F B' U' L2 U2 R' F R2 U2 D2 L' U2 D2 L2 F2 D2 R B2
Normal:B L B D' B'- pseudo 2x2x2
Inverse:R U' R' L2 U' L'- 2x2x3
Inverse:U' F...
for f2l u can do slow solves to work on look ahead cyotheking has a good video on his channel about look ahead which is a great video to watch( pro tips for look ahead)
2x2:4.35,4.28,4.39,4.13,10.85=4.35
3x3:13.73,10.35,12.72,14.52,12.66=13.04 really good avg for me
4x4:1:05.08,1:07.31, 1:07.10,1:12.76,1:10.87= 1:08.43
Pyra:6.64,6.78,4.50,5.02,5.97=5.88