Galatasaray is still slightly favored over Ajax, I think Ajax is indeed quite strong but maybe Galatasaray will be more dominant.
Even if they can't get a win from Ajax, a draw is also not bad for Galatasaray's current position. But if you want to qualify then winning the remaining 2 matches is the choice that must be taken and a draw is the worst possibility for Galatasaray. Ajax's position also allows them to put in all their efforts to win the remaining 2 matches.
If Galatasaray is seen as one of the candidates for the title, then its a must for them to beat Ajax as well, they can't refrain from Ajax and play defensively and still expect to win the entire thing. Kyiv game is of course not even a question, they have to win that game without a doubt, they have to make a big win out of that, like with plenty of goals, like maybe 4-0 or something, so that the ycould have a higher morale, and after that, Ajax game has to be at least a draw, and thats the minimum they could get, there is no chance they could lose this game ,and if its possible they have to win that one as well. Its not really impossible for them, they have managed to beat Tottenham, so beating Ajax could be something they can do. If they didn't end up getting a tie against such a team as RFS, they would have guaranteed already, but unfortunately they had a bad tie there, no idea why they were that bad on that game but they really dissapointed everyone and now they need to beat both teams to go up.