[R2] (F2) R2 {U2} F2 [R2] (F2) {U2}
If you make a pair of moves in the same type of bracket wide, you get another alg for the same case
You can do this with more than one set of the bracketed moves too

23.33 tied AsR mean, kind of a fail but it's fine
1)22 moves
R' U' F D2 B R2 U2 B2 R2 B F2 L2 D2 B L R' D' B' R U2 R B2 F D2 R' U' F
2)27 moves
R' U' F U2 F2 R2 D2 L' D2 L F2 L2 B2 L D' L B R F2 U R2 D' F' R' U' F
3)21 moves
R' U' F R' D2 U2 R2 U2 L R' D2 B' D' L' B' U F L D2 F R D2 R'...

Hey, I'm from Singapore too, and while I'm not 30 yet, I'm probably in the higher end of ages for cubers (which isnt that high in the grand scheme of things)
Honestly I've just been doing mainly Fewest Moves these days as I feel like I can't really improve in speedsolving events anymore...

Instead of memorising these algs as separate cases I memorised them as a sequence of transformations from some "base" algs.
Here's an example, take this 3e alg:
R2 F2 L2 U B2 L2 F2 D
We can get another alg for the same case by doing:
R2 F2 L2 Uw B2 L2 F2 Dw
We can generate a 2e2e alg from...

Fixed
21:
R' U' F R2 U B2 U' L2 U' F2 L2 D2 F' L2 R B' U2 L' D2 U' R' D U F' R' U' F
D' // Reduce U/D to 2 bad edges (1/1)
F' D2 R' B // DR-2E3C (4/5)
(R' L' D' R D) // DR (5/10)
R2 B2 L' // Thistlewhistle (3/13)
F2 L2 R2 // 1x2x3 (3/16)
D2 F2 U2 // 2E2E (3/19)
Skeleton: D' F' D2 R' B R2 B2...

23.33 AsR mean solutions
R' U' F D2 B2 R2 B' F' U2 L2 D2 L2 F2 U' B' L D' R' D2 U R' B U' R' U' F
23,
R' U' F D2 B2 F2 L D2 R' B2 D2 R D2 L F L' D2 L' R' U' L2 F2 R' U' R' U' F
23
R' U' F R2 U B2 U' L2 U' F2 L2 D2 F' L2 R B' U2 L' D2 U' R' D U F' R' U' F
24

22.9 ao12, I won't beat this in a long long time
R' U' F U' B2 L2 D' U2 L2 U' R2 F2 L R D' R' F2 R F' L2 U B2 R' U' F
24
R' U' F R' U2 R' F2 U' R' D B' F2 D' L2 D2 F2 U R2 D' L2 D L2 B2 F R' U' F
21
R' U' F L' F' L D2 B2 D2 F2 L D2 B2 L2 F2 L' D L2 U' R2 F R' D2 R' U' F
21
R' U'...

Really cool Domino solve, reminiscent of Sebastiano's WR :)
R' U' F U R' F2 L2 U2 R2 D2 F' L2 B' D2 L2 R2 B' D' F R2 B L F D2 R' U' F
R' B L2 D'//EO+CO (4/4)
(U2 B F' R' F2 B2 L')//DR (7/11)
B U2 B' U2 B2 L2 B' U2 B' F'//J-J to 5e (10/21)
R D2 R' L B2 L'//to 2e2e (6-4/23)
R' B L2 D' B * U2...

More solves with DR, 23.67 mean (AKA, I did 1 good solve and 2 ok ones)
1) R' U' F U' L' F D' B' L2 F' L' F' D R2 D B2 R2 U B2 L2 U2 B2 R' U' F
20
2) R' U' F D2 L2 U2 L' F2 U2 R' D2 F2 R' D2 R D F2 R2 B' F L D' R' U2 R' U' F
26
3) R' U' F D' U' R2 U L2 B2 D B2 U' R2 F' D R D B' L' R2 U2...

Just got my PB ao12 of 24.50 and all using Domino. The first 9 solves are from another DR-only session and the last 3 are from the ongoing weekly facebook comp
DR is OP.
1)R' U' F U' B2 D' F2 R2 B2 U' L2 D' F2 L' U L2 R' F' L D2 U' R2 U2 F R' U' F
24
2)R' U' F L2 U2 B2 R2 B U2 B' F2 R2 U2...

I do DR in 3 main steps
1)EO
2)reduce to 4e4c, 2e3c, or 2e4c
3) setup to R, R U R'/R U' R', R U2 R', respectively
I switch between steps 1 and 2, and steps 2 and 3 mainly to try to get a better case if the DR setup looks bad

I did a DR-only ao12, it was 25.7
1)R' U' F L' B' F2 D2 B2 L2 U F2 L2 U' L2 D L' D L' R' U R2 D' R' U' F
25
2)R' U' F B' U' R2 B2 U' F2 R2 F2 D L2 F2 U2 F' D2 L' F' U' B' R2 U F2 R' U' F
24
3)R' U' F R' B' D F2 L2 U' D2 L D' F2 U2 B' R2 U2 R2 D2 R2 B L2 F R' U' F
26
4)R' U' F B U' L2...

I tried the 4 move EO on normal, as well as the 3 move EO on the inverse, but I couldn't find any good continuations off that
I then noticed if I do a B on inverse it will leave a 3 move EO on normal so I gave that a try too.
If that did not work out I would most likely have tried EO on a...

Solutions+thoughts for my 24.33 NR (AsR #2) mean at Medan Farewell 2019:
R' U' F L2 B2 R F2 R' D2 L2 R U2 F U R' F' L2 D2 F' R2 U L2 F2 R' U' F, 25 moves
R' U' F D B2 U2 L2 F2 U B2 D L R' B D2 R2 F' U R' F' R' U R' U' F, 25 moves
R' U' F R2 B U2 R2 F U2 B U2 F' D B' R D R' F L2 F2 D U2...

27.00 mean at Singapore Championships
1)28 moves
R' U' F R B2 D2 F2 L2 B2 R F2 U B R U R2 D' L U L2 R' F2 R' U' F
2)26 moves
R' U' F L2 D' R2 B2 D' R2 U F2 U2 R2 U R B R2 U' L D2 B2 R2 U2 F' R' U' F
3)27 moves
R' U' F U' R2 U' R2 U' L2 R2 F2 D2 U' R2 F' U L2 R U' F' U2 B L' D2 R' U' F

If you use Rniss at that point, the cube is an F2L-1. That insert is the optimal alg to solve the F2L pair which I learnt a while back. I saw it this way, although the setup to sexy way of viewing it is valid too, but perhaps less obvious to find

FMC Southeast Asia, 27.00 mean, 2nd place:
1) 28
R' U' F L2 B2 U2 F2 R2 D2 R2 B R2 F2 D' L' R2 B' D2 B' D2 U R F R' U' F
2) 25
R' U' F R2 F L2 F' U2 F U2 F D L D' F D2 L B F D2 F D2 R' U' F
3) 28
R' U' F R' U2 B2 U2 F2 L' R2 F2 R2 D2 U F' L R F2 R U L D F2 R' U' F