1. Manage Fatigue Across Multiple Competitions
When your team is playing in FC 25 Coins multiple competitions (league, cups, international tournaments, etc.), it's important to rotate your squad to ensure that key players don’t get overworked, especially during busy periods with multiple fixtures. Here's how to balance fatigue:

Prioritize Key Matches: Rotate your squad for less important games (like cup games or matches against weaker opponents), while fielding your strongest lineup for crucial league or knockout-stage matches.
Early Rest for Tired Players: Use substitutions to give tired players a rest early in a match if you’re comfortably ahead, especially in the second half, so they’re fresh for the next game.
Adjust Starting Lineups Based on Fatigue: When you see that some of your players are fatigued from previous matches, make adjustments by rotating them out of the starting lineup for the upcoming match, opting for fresher options.
2. Use Substitutions to Complement Squad Rotation
Substitutions don’t only happen at the end of the game — they should be used strategically throughout. Combine this with squad rotation for the best results:

In the Second Half: If a player is getting tired in the second half, make early substitutions (usually around the 60-70th minute) to keep your team's intensity high. This will help maintain momentum and prevent players from losing focus or becoming ineffective.
Tactical Substitutions: Use substitutions to adjust your formation or playing style. For instance, if your opponent is tiring and you need more pace, bring on a speedy winger or striker to exploit the space.
Rest Key Players: If you’re leading comfortably, use substitutions to rest key players who are crucial for your upcoming big match, especially if it's a league decider or a cup final.
3. Substitutions for Tactical Flexibility
Substitutions can also be used to change the tactical flow of the game. If you rotate your squad in line with your overall game plan, you can also adjust based on how the match unfolds:

Defensive Substitutions: If you're leading and want to shore up your defense, you can substitute in a more defensive player or a high-stamina player who can help with closing out the game.
Attacking Substitutions: If you're chasing a goal, bring on attacking players with pace and finishing ability. This could be a fresh striker or an attacking midfielder who can make a difference with fresh legs.
Formation Changes: Use substitutions to change your formation. For example, if you need to push for a goal, switch from a 4-3-3 to a 4-2-4 or bring on an extra striker for more attacking threat.
4. Rotate Players for Long-Term Player Growth
Long-term squad rotation isn’t just about fitness; it’s also about player development. Here’s how to use it effectively:

Rest Star Players: To prevent burnout and ensure star players don’t hit a performance slump, regularly rotate them, especially when the team is in good form and the match situation allows for it.
Give Young Players Game Time: Regular squad rotation allows younger or backup players to get match experience, which helps them grow, improving their overall stats and increasing their value over time. Substituting them in for key players when appropriate (especially in lower-stakes games) can help their development.
Monitor Player Performance: Use rotations to test different combinations and see how players fit together. Sometimes a backup player might surprise you with their form and cheap FC 25 Coins contribute more than expected.